Bhanu Gollapudi | 853e2bd | 2011-02-04 12:10:34 -0800 | [diff] [blame] | 1 | /* bnx2fc_fcoe.c: Broadcom NetXtreme II Linux FCoE offload driver. |
| 2 | * This file contains the code that interacts with libfc, libfcoe, |
| 3 | * cnic modules to create FCoE instances, send/receive non-offloaded |
| 4 | * FIP/FCoE packets, listen to link events etc. |
| 5 | * |
| 6 | * Copyright (c) 2008 - 2010 Broadcom Corporation |
| 7 | * |
| 8 | * This program is free software; you can redistribute it and/or modify |
| 9 | * it under the terms of the GNU General Public License as published by |
| 10 | * the Free Software Foundation. |
| 11 | * |
| 12 | * Written by: Bhanu Prakash Gollapudi (bprakash@broadcom.com) |
| 13 | */ |
| 14 | |
| 15 | #include "bnx2fc.h" |
| 16 | |
| 17 | static struct list_head adapter_list; |
| 18 | static u32 adapter_count; |
| 19 | static DEFINE_MUTEX(bnx2fc_dev_lock); |
| 20 | DEFINE_PER_CPU(struct bnx2fc_percpu_s, bnx2fc_percpu); |
| 21 | |
| 22 | #define DRV_MODULE_NAME "bnx2fc" |
| 23 | #define DRV_MODULE_VERSION BNX2FC_VERSION |
Nithin Sujir | d9f7f37 | 2011-03-17 17:13:37 -0700 | [diff] [blame] | 24 | #define DRV_MODULE_RELDATE "Mar 17, 2011" |
Bhanu Gollapudi | 853e2bd | 2011-02-04 12:10:34 -0800 | [diff] [blame] | 25 | |
| 26 | |
| 27 | static char version[] __devinitdata = |
| 28 | "Broadcom NetXtreme II FCoE Driver " DRV_MODULE_NAME \ |
| 29 | " v" DRV_MODULE_VERSION " (" DRV_MODULE_RELDATE ")\n"; |
| 30 | |
| 31 | |
| 32 | MODULE_AUTHOR("Bhanu Prakash Gollapudi <bprakash@broadcom.com>"); |
| 33 | MODULE_DESCRIPTION("Broadcom NetXtreme II BCM57710 FCoE Driver"); |
| 34 | MODULE_LICENSE("GPL"); |
| 35 | MODULE_VERSION(DRV_MODULE_VERSION); |
| 36 | |
| 37 | #define BNX2FC_MAX_QUEUE_DEPTH 256 |
| 38 | #define BNX2FC_MIN_QUEUE_DEPTH 32 |
| 39 | #define FCOE_WORD_TO_BYTE 4 |
| 40 | |
| 41 | static struct scsi_transport_template *bnx2fc_transport_template; |
| 42 | static struct scsi_transport_template *bnx2fc_vport_xport_template; |
| 43 | |
| 44 | struct workqueue_struct *bnx2fc_wq; |
| 45 | |
| 46 | /* bnx2fc structure needs only one instance of the fcoe_percpu_s structure. |
| 47 | * Here the io threads are per cpu but the l2 thread is just one |
| 48 | */ |
| 49 | struct fcoe_percpu_s bnx2fc_global; |
| 50 | DEFINE_SPINLOCK(bnx2fc_global_lock); |
| 51 | |
| 52 | static struct cnic_ulp_ops bnx2fc_cnic_cb; |
| 53 | static struct libfc_function_template bnx2fc_libfc_fcn_templ; |
| 54 | static struct scsi_host_template bnx2fc_shost_template; |
| 55 | static struct fc_function_template bnx2fc_transport_function; |
| 56 | static struct fc_function_template bnx2fc_vport_xport_function; |
| 57 | static int bnx2fc_create(struct net_device *netdev, enum fip_state fip_mode); |
| 58 | static int bnx2fc_destroy(struct net_device *net_device); |
| 59 | static int bnx2fc_enable(struct net_device *netdev); |
| 60 | static int bnx2fc_disable(struct net_device *netdev); |
| 61 | |
| 62 | static void bnx2fc_recv_frame(struct sk_buff *skb); |
| 63 | |
| 64 | static void bnx2fc_start_disc(struct bnx2fc_hba *hba); |
| 65 | static int bnx2fc_shost_config(struct fc_lport *lport, struct device *dev); |
| 66 | static int bnx2fc_net_config(struct fc_lport *lp); |
| 67 | static int bnx2fc_lport_config(struct fc_lport *lport); |
| 68 | static int bnx2fc_em_config(struct fc_lport *lport); |
| 69 | static int bnx2fc_bind_adapter_devices(struct bnx2fc_hba *hba); |
| 70 | static void bnx2fc_unbind_adapter_devices(struct bnx2fc_hba *hba); |
| 71 | static int bnx2fc_bind_pcidev(struct bnx2fc_hba *hba); |
| 72 | static void bnx2fc_unbind_pcidev(struct bnx2fc_hba *hba); |
| 73 | static struct fc_lport *bnx2fc_if_create(struct bnx2fc_hba *hba, |
| 74 | struct device *parent, int npiv); |
| 75 | static void bnx2fc_destroy_work(struct work_struct *work); |
| 76 | |
| 77 | static struct bnx2fc_hba *bnx2fc_hba_lookup(struct net_device *phys_dev); |
| 78 | static struct bnx2fc_hba *bnx2fc_find_hba_for_cnic(struct cnic_dev *cnic); |
| 79 | |
| 80 | static int bnx2fc_fw_init(struct bnx2fc_hba *hba); |
| 81 | static void bnx2fc_fw_destroy(struct bnx2fc_hba *hba); |
| 82 | |
| 83 | static void bnx2fc_port_shutdown(struct fc_lport *lport); |
| 84 | static void bnx2fc_stop(struct bnx2fc_hba *hba); |
| 85 | static int __init bnx2fc_mod_init(void); |
| 86 | static void __exit bnx2fc_mod_exit(void); |
| 87 | |
| 88 | unsigned int bnx2fc_debug_level; |
| 89 | module_param_named(debug_logging, bnx2fc_debug_level, int, S_IRUGO|S_IWUSR); |
| 90 | |
| 91 | static int bnx2fc_cpu_callback(struct notifier_block *nfb, |
| 92 | unsigned long action, void *hcpu); |
| 93 | /* notification function for CPU hotplug events */ |
| 94 | static struct notifier_block bnx2fc_cpu_notifier = { |
| 95 | .notifier_call = bnx2fc_cpu_callback, |
| 96 | }; |
| 97 | |
| 98 | static void bnx2fc_clean_rx_queue(struct fc_lport *lp) |
| 99 | { |
| 100 | struct fcoe_percpu_s *bg; |
| 101 | struct fcoe_rcv_info *fr; |
| 102 | struct sk_buff_head *list; |
| 103 | struct sk_buff *skb, *next; |
| 104 | struct sk_buff *head; |
| 105 | |
| 106 | bg = &bnx2fc_global; |
| 107 | spin_lock_bh(&bg->fcoe_rx_list.lock); |
| 108 | list = &bg->fcoe_rx_list; |
| 109 | head = list->next; |
| 110 | for (skb = head; skb != (struct sk_buff *)list; |
| 111 | skb = next) { |
| 112 | next = skb->next; |
| 113 | fr = fcoe_dev_from_skb(skb); |
| 114 | if (fr->fr_dev == lp) { |
| 115 | __skb_unlink(skb, list); |
| 116 | kfree_skb(skb); |
| 117 | } |
| 118 | } |
| 119 | spin_unlock_bh(&bg->fcoe_rx_list.lock); |
| 120 | } |
| 121 | |
| 122 | int bnx2fc_get_paged_crc_eof(struct sk_buff *skb, int tlen) |
| 123 | { |
| 124 | int rc; |
| 125 | spin_lock(&bnx2fc_global_lock); |
| 126 | rc = fcoe_get_paged_crc_eof(skb, tlen, &bnx2fc_global); |
| 127 | spin_unlock(&bnx2fc_global_lock); |
| 128 | |
| 129 | return rc; |
| 130 | } |
| 131 | |
| 132 | static void bnx2fc_abort_io(struct fc_lport *lport) |
| 133 | { |
| 134 | /* |
| 135 | * This function is no-op for bnx2fc, but we do |
| 136 | * not want to leave it as NULL either, as libfc |
| 137 | * can call the default function which is |
| 138 | * fc_fcp_abort_io. |
| 139 | */ |
| 140 | } |
| 141 | |
| 142 | static void bnx2fc_cleanup(struct fc_lport *lport) |
| 143 | { |
| 144 | struct fcoe_port *port = lport_priv(lport); |
| 145 | struct bnx2fc_hba *hba = port->priv; |
| 146 | struct bnx2fc_rport *tgt; |
| 147 | int i; |
| 148 | |
| 149 | BNX2FC_MISC_DBG("Entered %s\n", __func__); |
| 150 | mutex_lock(&hba->hba_mutex); |
| 151 | spin_lock_bh(&hba->hba_lock); |
| 152 | for (i = 0; i < BNX2FC_NUM_MAX_SESS; i++) { |
| 153 | tgt = hba->tgt_ofld_list[i]; |
| 154 | if (tgt) { |
| 155 | /* Cleanup IOs belonging to requested vport */ |
| 156 | if (tgt->port == port) { |
| 157 | spin_unlock_bh(&hba->hba_lock); |
| 158 | BNX2FC_TGT_DBG(tgt, "flush/cleanup\n"); |
| 159 | bnx2fc_flush_active_ios(tgt); |
| 160 | spin_lock_bh(&hba->hba_lock); |
| 161 | } |
| 162 | } |
| 163 | } |
| 164 | spin_unlock_bh(&hba->hba_lock); |
| 165 | mutex_unlock(&hba->hba_mutex); |
| 166 | } |
| 167 | |
| 168 | static int bnx2fc_xmit_l2_frame(struct bnx2fc_rport *tgt, |
| 169 | struct fc_frame *fp) |
| 170 | { |
| 171 | struct fc_rport_priv *rdata = tgt->rdata; |
| 172 | struct fc_frame_header *fh; |
| 173 | int rc = 0; |
| 174 | |
| 175 | fh = fc_frame_header_get(fp); |
| 176 | BNX2FC_TGT_DBG(tgt, "Xmit L2 frame rport = 0x%x, oxid = 0x%x, " |
| 177 | "r_ctl = 0x%x\n", rdata->ids.port_id, |
| 178 | ntohs(fh->fh_ox_id), fh->fh_r_ctl); |
| 179 | if ((fh->fh_type == FC_TYPE_ELS) && |
| 180 | (fh->fh_r_ctl == FC_RCTL_ELS_REQ)) { |
| 181 | |
| 182 | switch (fc_frame_payload_op(fp)) { |
| 183 | case ELS_ADISC: |
| 184 | rc = bnx2fc_send_adisc(tgt, fp); |
| 185 | break; |
| 186 | case ELS_LOGO: |
| 187 | rc = bnx2fc_send_logo(tgt, fp); |
| 188 | break; |
| 189 | case ELS_RLS: |
| 190 | rc = bnx2fc_send_rls(tgt, fp); |
| 191 | break; |
| 192 | default: |
| 193 | break; |
| 194 | } |
| 195 | } else if ((fh->fh_type == FC_TYPE_BLS) && |
| 196 | (fh->fh_r_ctl == FC_RCTL_BA_ABTS)) |
| 197 | BNX2FC_TGT_DBG(tgt, "ABTS frame\n"); |
| 198 | else { |
| 199 | BNX2FC_TGT_DBG(tgt, "Send L2 frame type 0x%x " |
| 200 | "rctl 0x%x thru non-offload path\n", |
| 201 | fh->fh_type, fh->fh_r_ctl); |
| 202 | return -ENODEV; |
| 203 | } |
| 204 | if (rc) |
| 205 | return -ENOMEM; |
| 206 | else |
| 207 | return 0; |
| 208 | } |
| 209 | |
| 210 | /** |
| 211 | * bnx2fc_xmit - bnx2fc's FCoE frame transmit function |
| 212 | * |
| 213 | * @lport: the associated local port |
| 214 | * @fp: the fc_frame to be transmitted |
| 215 | */ |
| 216 | static int bnx2fc_xmit(struct fc_lport *lport, struct fc_frame *fp) |
| 217 | { |
| 218 | struct ethhdr *eh; |
| 219 | struct fcoe_crc_eof *cp; |
| 220 | struct sk_buff *skb; |
| 221 | struct fc_frame_header *fh; |
| 222 | struct bnx2fc_hba *hba; |
| 223 | struct fcoe_port *port; |
| 224 | struct fcoe_hdr *hp; |
| 225 | struct bnx2fc_rport *tgt; |
| 226 | struct fcoe_dev_stats *stats; |
| 227 | u8 sof, eof; |
| 228 | u32 crc; |
| 229 | unsigned int hlen, tlen, elen; |
| 230 | int wlen, rc = 0; |
| 231 | |
| 232 | port = (struct fcoe_port *)lport_priv(lport); |
| 233 | hba = port->priv; |
| 234 | |
| 235 | fh = fc_frame_header_get(fp); |
| 236 | |
| 237 | skb = fp_skb(fp); |
| 238 | if (!lport->link_up) { |
| 239 | BNX2FC_HBA_DBG(lport, "bnx2fc_xmit link down\n"); |
| 240 | kfree_skb(skb); |
| 241 | return 0; |
| 242 | } |
| 243 | |
| 244 | if (unlikely(fh->fh_r_ctl == FC_RCTL_ELS_REQ)) { |
| 245 | if (!hba->ctlr.sel_fcf) { |
| 246 | BNX2FC_HBA_DBG(lport, "FCF not selected yet!\n"); |
| 247 | kfree_skb(skb); |
| 248 | return -EINVAL; |
| 249 | } |
| 250 | if (fcoe_ctlr_els_send(&hba->ctlr, lport, skb)) |
| 251 | return 0; |
| 252 | } |
| 253 | |
| 254 | sof = fr_sof(fp); |
| 255 | eof = fr_eof(fp); |
| 256 | |
| 257 | /* |
| 258 | * Snoop the frame header to check if the frame is for |
| 259 | * an offloaded session |
| 260 | */ |
| 261 | /* |
| 262 | * tgt_ofld_list access is synchronized using |
| 263 | * both hba mutex and hba lock. Atleast hba mutex or |
| 264 | * hba lock needs to be held for read access. |
| 265 | */ |
| 266 | |
| 267 | spin_lock_bh(&hba->hba_lock); |
| 268 | tgt = bnx2fc_tgt_lookup(port, ntoh24(fh->fh_d_id)); |
| 269 | if (tgt && (test_bit(BNX2FC_FLAG_SESSION_READY, &tgt->flags))) { |
| 270 | /* This frame is for offloaded session */ |
| 271 | BNX2FC_HBA_DBG(lport, "xmit: Frame is for offloaded session " |
| 272 | "port_id = 0x%x\n", ntoh24(fh->fh_d_id)); |
| 273 | spin_unlock_bh(&hba->hba_lock); |
| 274 | rc = bnx2fc_xmit_l2_frame(tgt, fp); |
| 275 | if (rc != -ENODEV) { |
| 276 | kfree_skb(skb); |
| 277 | return rc; |
| 278 | } |
| 279 | } else { |
| 280 | spin_unlock_bh(&hba->hba_lock); |
| 281 | } |
| 282 | |
| 283 | elen = sizeof(struct ethhdr); |
| 284 | hlen = sizeof(struct fcoe_hdr); |
| 285 | tlen = sizeof(struct fcoe_crc_eof); |
| 286 | wlen = (skb->len - tlen + sizeof(crc)) / FCOE_WORD_TO_BYTE; |
| 287 | |
| 288 | skb->ip_summed = CHECKSUM_NONE; |
| 289 | crc = fcoe_fc_crc(fp); |
| 290 | |
| 291 | /* copy port crc and eof to the skb buff */ |
| 292 | if (skb_is_nonlinear(skb)) { |
| 293 | skb_frag_t *frag; |
| 294 | if (bnx2fc_get_paged_crc_eof(skb, tlen)) { |
| 295 | kfree_skb(skb); |
| 296 | return -ENOMEM; |
| 297 | } |
| 298 | frag = &skb_shinfo(skb)->frags[skb_shinfo(skb)->nr_frags - 1]; |
| 299 | cp = kmap_atomic(frag->page, KM_SKB_DATA_SOFTIRQ) |
| 300 | + frag->page_offset; |
| 301 | } else { |
| 302 | cp = (struct fcoe_crc_eof *)skb_put(skb, tlen); |
| 303 | } |
| 304 | |
| 305 | memset(cp, 0, sizeof(*cp)); |
| 306 | cp->fcoe_eof = eof; |
| 307 | cp->fcoe_crc32 = cpu_to_le32(~crc); |
| 308 | if (skb_is_nonlinear(skb)) { |
| 309 | kunmap_atomic(cp, KM_SKB_DATA_SOFTIRQ); |
| 310 | cp = NULL; |
| 311 | } |
| 312 | |
| 313 | /* adjust skb network/transport offsets to match mac/fcoe/port */ |
| 314 | skb_push(skb, elen + hlen); |
| 315 | skb_reset_mac_header(skb); |
| 316 | skb_reset_network_header(skb); |
| 317 | skb->mac_len = elen; |
| 318 | skb->protocol = htons(ETH_P_FCOE); |
| 319 | skb->dev = hba->netdev; |
| 320 | |
| 321 | /* fill up mac and fcoe headers */ |
| 322 | eh = eth_hdr(skb); |
| 323 | eh->h_proto = htons(ETH_P_FCOE); |
| 324 | if (hba->ctlr.map_dest) |
| 325 | fc_fcoe_set_mac(eh->h_dest, fh->fh_d_id); |
| 326 | else |
| 327 | /* insert GW address */ |
| 328 | memcpy(eh->h_dest, hba->ctlr.dest_addr, ETH_ALEN); |
| 329 | |
| 330 | if (unlikely(hba->ctlr.flogi_oxid != FC_XID_UNKNOWN)) |
| 331 | memcpy(eh->h_source, hba->ctlr.ctl_src_addr, ETH_ALEN); |
| 332 | else |
| 333 | memcpy(eh->h_source, port->data_src_addr, ETH_ALEN); |
| 334 | |
| 335 | hp = (struct fcoe_hdr *)(eh + 1); |
| 336 | memset(hp, 0, sizeof(*hp)); |
| 337 | if (FC_FCOE_VER) |
| 338 | FC_FCOE_ENCAPS_VER(hp, FC_FCOE_VER); |
| 339 | hp->fcoe_sof = sof; |
| 340 | |
| 341 | /* fcoe lso, mss is in max_payload which is non-zero for FCP data */ |
| 342 | if (lport->seq_offload && fr_max_payload(fp)) { |
| 343 | skb_shinfo(skb)->gso_type = SKB_GSO_FCOE; |
| 344 | skb_shinfo(skb)->gso_size = fr_max_payload(fp); |
| 345 | } else { |
| 346 | skb_shinfo(skb)->gso_type = 0; |
| 347 | skb_shinfo(skb)->gso_size = 0; |
| 348 | } |
| 349 | |
| 350 | /*update tx stats */ |
| 351 | stats = per_cpu_ptr(lport->dev_stats, get_cpu()); |
| 352 | stats->TxFrames++; |
| 353 | stats->TxWords += wlen; |
| 354 | put_cpu(); |
| 355 | |
| 356 | /* send down to lld */ |
| 357 | fr_dev(fp) = lport; |
| 358 | if (port->fcoe_pending_queue.qlen) |
| 359 | fcoe_check_wait_queue(lport, skb); |
| 360 | else if (fcoe_start_io(skb)) |
| 361 | fcoe_check_wait_queue(lport, skb); |
| 362 | |
| 363 | return 0; |
| 364 | } |
| 365 | |
| 366 | /** |
| 367 | * bnx2fc_rcv - This is bnx2fc's receive function called by NET_RX_SOFTIRQ |
| 368 | * |
| 369 | * @skb: the receive socket buffer |
| 370 | * @dev: associated net device |
| 371 | * @ptype: context |
| 372 | * @olddev: last device |
| 373 | * |
| 374 | * This function receives the packet and builds FC frame and passes it up |
| 375 | */ |
| 376 | static int bnx2fc_rcv(struct sk_buff *skb, struct net_device *dev, |
| 377 | struct packet_type *ptype, struct net_device *olddev) |
| 378 | { |
| 379 | struct fc_lport *lport; |
| 380 | struct bnx2fc_hba *hba; |
| 381 | struct fc_frame_header *fh; |
| 382 | struct fcoe_rcv_info *fr; |
| 383 | struct fcoe_percpu_s *bg; |
| 384 | unsigned short oxid; |
| 385 | |
| 386 | hba = container_of(ptype, struct bnx2fc_hba, fcoe_packet_type); |
| 387 | lport = hba->ctlr.lp; |
| 388 | |
| 389 | if (unlikely(lport == NULL)) { |
| 390 | printk(KERN_ALERT PFX "bnx2fc_rcv: lport is NULL\n"); |
| 391 | goto err; |
| 392 | } |
| 393 | |
| 394 | if (unlikely(eth_hdr(skb)->h_proto != htons(ETH_P_FCOE))) { |
| 395 | printk(KERN_ALERT PFX "bnx2fc_rcv: Wrong FC type frame\n"); |
| 396 | goto err; |
| 397 | } |
| 398 | |
| 399 | /* |
| 400 | * Check for minimum frame length, and make sure required FCoE |
| 401 | * and FC headers are pulled into the linear data area. |
| 402 | */ |
| 403 | if (unlikely((skb->len < FCOE_MIN_FRAME) || |
| 404 | !pskb_may_pull(skb, FCOE_HEADER_LEN))) |
| 405 | goto err; |
| 406 | |
| 407 | skb_set_transport_header(skb, sizeof(struct fcoe_hdr)); |
| 408 | fh = (struct fc_frame_header *) skb_transport_header(skb); |
| 409 | |
| 410 | oxid = ntohs(fh->fh_ox_id); |
| 411 | |
| 412 | fr = fcoe_dev_from_skb(skb); |
| 413 | fr->fr_dev = lport; |
| 414 | fr->ptype = ptype; |
| 415 | |
| 416 | bg = &bnx2fc_global; |
| 417 | spin_lock_bh(&bg->fcoe_rx_list.lock); |
| 418 | |
| 419 | __skb_queue_tail(&bg->fcoe_rx_list, skb); |
| 420 | if (bg->fcoe_rx_list.qlen == 1) |
| 421 | wake_up_process(bg->thread); |
| 422 | |
| 423 | spin_unlock_bh(&bg->fcoe_rx_list.lock); |
| 424 | |
| 425 | return 0; |
| 426 | err: |
| 427 | kfree_skb(skb); |
| 428 | return -1; |
| 429 | } |
| 430 | |
| 431 | static int bnx2fc_l2_rcv_thread(void *arg) |
| 432 | { |
| 433 | struct fcoe_percpu_s *bg = arg; |
| 434 | struct sk_buff *skb; |
| 435 | |
| 436 | set_user_nice(current, -20); |
| 437 | set_current_state(TASK_INTERRUPTIBLE); |
| 438 | while (!kthread_should_stop()) { |
| 439 | schedule(); |
Bhanu Gollapudi | 853e2bd | 2011-02-04 12:10:34 -0800 | [diff] [blame] | 440 | spin_lock_bh(&bg->fcoe_rx_list.lock); |
| 441 | while ((skb = __skb_dequeue(&bg->fcoe_rx_list)) != NULL) { |
| 442 | spin_unlock_bh(&bg->fcoe_rx_list.lock); |
| 443 | bnx2fc_recv_frame(skb); |
| 444 | spin_lock_bh(&bg->fcoe_rx_list.lock); |
| 445 | } |
Bhanu Gollapudi | fee7871 | 2011-03-21 18:51:13 -0700 | [diff] [blame] | 446 | __set_current_state(TASK_INTERRUPTIBLE); |
Bhanu Gollapudi | 853e2bd | 2011-02-04 12:10:34 -0800 | [diff] [blame] | 447 | spin_unlock_bh(&bg->fcoe_rx_list.lock); |
Bhanu Gollapudi | 853e2bd | 2011-02-04 12:10:34 -0800 | [diff] [blame] | 448 | } |
Bhanu Gollapudi | fee7871 | 2011-03-21 18:51:13 -0700 | [diff] [blame] | 449 | __set_current_state(TASK_RUNNING); |
Bhanu Gollapudi | 853e2bd | 2011-02-04 12:10:34 -0800 | [diff] [blame] | 450 | return 0; |
| 451 | } |
| 452 | |
| 453 | |
| 454 | static void bnx2fc_recv_frame(struct sk_buff *skb) |
| 455 | { |
| 456 | u32 fr_len; |
| 457 | struct fc_lport *lport; |
| 458 | struct fcoe_rcv_info *fr; |
| 459 | struct fcoe_dev_stats *stats; |
| 460 | struct fc_frame_header *fh; |
| 461 | struct fcoe_crc_eof crc_eof; |
| 462 | struct fc_frame *fp; |
| 463 | struct fc_lport *vn_port; |
| 464 | struct fcoe_port *port; |
| 465 | u8 *mac = NULL; |
| 466 | u8 *dest_mac = NULL; |
| 467 | struct fcoe_hdr *hp; |
| 468 | |
| 469 | fr = fcoe_dev_from_skb(skb); |
| 470 | lport = fr->fr_dev; |
| 471 | if (unlikely(lport == NULL)) { |
| 472 | printk(KERN_ALERT PFX "Invalid lport struct\n"); |
| 473 | kfree_skb(skb); |
| 474 | return; |
| 475 | } |
| 476 | |
| 477 | if (skb_is_nonlinear(skb)) |
| 478 | skb_linearize(skb); |
| 479 | mac = eth_hdr(skb)->h_source; |
| 480 | dest_mac = eth_hdr(skb)->h_dest; |
| 481 | |
| 482 | /* Pull the header */ |
| 483 | hp = (struct fcoe_hdr *) skb_network_header(skb); |
| 484 | fh = (struct fc_frame_header *) skb_transport_header(skb); |
| 485 | skb_pull(skb, sizeof(struct fcoe_hdr)); |
| 486 | fr_len = skb->len - sizeof(struct fcoe_crc_eof); |
| 487 | |
| 488 | stats = per_cpu_ptr(lport->dev_stats, get_cpu()); |
| 489 | stats->RxFrames++; |
| 490 | stats->RxWords += fr_len / FCOE_WORD_TO_BYTE; |
| 491 | |
| 492 | fp = (struct fc_frame *)skb; |
| 493 | fc_frame_init(fp); |
| 494 | fr_dev(fp) = lport; |
| 495 | fr_sof(fp) = hp->fcoe_sof; |
| 496 | if (skb_copy_bits(skb, fr_len, &crc_eof, sizeof(crc_eof))) { |
| 497 | put_cpu(); |
| 498 | kfree_skb(skb); |
| 499 | return; |
| 500 | } |
| 501 | fr_eof(fp) = crc_eof.fcoe_eof; |
| 502 | fr_crc(fp) = crc_eof.fcoe_crc32; |
| 503 | if (pskb_trim(skb, fr_len)) { |
| 504 | put_cpu(); |
| 505 | kfree_skb(skb); |
| 506 | return; |
| 507 | } |
| 508 | |
| 509 | fh = fc_frame_header_get(fp); |
| 510 | |
| 511 | vn_port = fc_vport_id_lookup(lport, ntoh24(fh->fh_d_id)); |
| 512 | if (vn_port) { |
| 513 | port = lport_priv(vn_port); |
| 514 | if (compare_ether_addr(port->data_src_addr, dest_mac) |
| 515 | != 0) { |
| 516 | BNX2FC_HBA_DBG(lport, "fpma mismatch\n"); |
| 517 | put_cpu(); |
| 518 | kfree_skb(skb); |
| 519 | return; |
| 520 | } |
| 521 | } |
| 522 | if (fh->fh_r_ctl == FC_RCTL_DD_SOL_DATA && |
| 523 | fh->fh_type == FC_TYPE_FCP) { |
| 524 | /* Drop FCP data. We dont this in L2 path */ |
| 525 | put_cpu(); |
| 526 | kfree_skb(skb); |
| 527 | return; |
| 528 | } |
| 529 | if (fh->fh_r_ctl == FC_RCTL_ELS_REQ && |
| 530 | fh->fh_type == FC_TYPE_ELS) { |
| 531 | switch (fc_frame_payload_op(fp)) { |
| 532 | case ELS_LOGO: |
| 533 | if (ntoh24(fh->fh_s_id) == FC_FID_FLOGI) { |
| 534 | /* drop non-FIP LOGO */ |
| 535 | put_cpu(); |
| 536 | kfree_skb(skb); |
| 537 | return; |
| 538 | } |
| 539 | break; |
| 540 | } |
| 541 | } |
| 542 | if (le32_to_cpu(fr_crc(fp)) != |
| 543 | ~crc32(~0, skb->data, fr_len)) { |
| 544 | if (stats->InvalidCRCCount < 5) |
| 545 | printk(KERN_WARNING PFX "dropping frame with " |
| 546 | "CRC error\n"); |
| 547 | stats->InvalidCRCCount++; |
| 548 | put_cpu(); |
| 549 | kfree_skb(skb); |
| 550 | return; |
| 551 | } |
| 552 | put_cpu(); |
| 553 | fc_exch_recv(lport, fp); |
| 554 | } |
| 555 | |
| 556 | /** |
| 557 | * bnx2fc_percpu_io_thread - thread per cpu for ios |
| 558 | * |
| 559 | * @arg: ptr to bnx2fc_percpu_info structure |
| 560 | */ |
| 561 | int bnx2fc_percpu_io_thread(void *arg) |
| 562 | { |
| 563 | struct bnx2fc_percpu_s *p = arg; |
| 564 | struct bnx2fc_work *work, *tmp; |
| 565 | LIST_HEAD(work_list); |
| 566 | |
| 567 | set_user_nice(current, -20); |
| 568 | set_current_state(TASK_INTERRUPTIBLE); |
| 569 | while (!kthread_should_stop()) { |
| 570 | schedule(); |
Bhanu Gollapudi | 853e2bd | 2011-02-04 12:10:34 -0800 | [diff] [blame] | 571 | spin_lock_bh(&p->fp_work_lock); |
| 572 | while (!list_empty(&p->work_list)) { |
| 573 | list_splice_init(&p->work_list, &work_list); |
| 574 | spin_unlock_bh(&p->fp_work_lock); |
| 575 | |
| 576 | list_for_each_entry_safe(work, tmp, &work_list, list) { |
| 577 | list_del_init(&work->list); |
| 578 | bnx2fc_process_cq_compl(work->tgt, work->wqe); |
| 579 | kfree(work); |
| 580 | } |
| 581 | |
| 582 | spin_lock_bh(&p->fp_work_lock); |
| 583 | } |
Bhanu Gollapudi | fee7871 | 2011-03-21 18:51:13 -0700 | [diff] [blame] | 584 | __set_current_state(TASK_INTERRUPTIBLE); |
Bhanu Gollapudi | 853e2bd | 2011-02-04 12:10:34 -0800 | [diff] [blame] | 585 | spin_unlock_bh(&p->fp_work_lock); |
Bhanu Gollapudi | 853e2bd | 2011-02-04 12:10:34 -0800 | [diff] [blame] | 586 | } |
Bhanu Gollapudi | fee7871 | 2011-03-21 18:51:13 -0700 | [diff] [blame] | 587 | __set_current_state(TASK_RUNNING); |
Bhanu Gollapudi | 853e2bd | 2011-02-04 12:10:34 -0800 | [diff] [blame] | 588 | |
| 589 | return 0; |
| 590 | } |
| 591 | |
| 592 | static struct fc_host_statistics *bnx2fc_get_host_stats(struct Scsi_Host *shost) |
| 593 | { |
| 594 | struct fc_host_statistics *bnx2fc_stats; |
| 595 | struct fc_lport *lport = shost_priv(shost); |
| 596 | struct fcoe_port *port = lport_priv(lport); |
| 597 | struct bnx2fc_hba *hba = port->priv; |
| 598 | struct fcoe_statistics_params *fw_stats; |
| 599 | int rc = 0; |
| 600 | |
| 601 | fw_stats = (struct fcoe_statistics_params *)hba->stats_buffer; |
| 602 | if (!fw_stats) |
| 603 | return NULL; |
| 604 | |
| 605 | bnx2fc_stats = fc_get_host_stats(shost); |
| 606 | |
| 607 | init_completion(&hba->stat_req_done); |
| 608 | if (bnx2fc_send_stat_req(hba)) |
| 609 | return bnx2fc_stats; |
| 610 | rc = wait_for_completion_timeout(&hba->stat_req_done, (2 * HZ)); |
| 611 | if (!rc) { |
| 612 | BNX2FC_HBA_DBG(lport, "FW stat req timed out\n"); |
| 613 | return bnx2fc_stats; |
| 614 | } |
| 615 | bnx2fc_stats->invalid_crc_count += fw_stats->rx_stat1.fc_crc_cnt; |
| 616 | bnx2fc_stats->tx_frames += fw_stats->tx_stat.fcoe_tx_pkt_cnt; |
| 617 | bnx2fc_stats->tx_words += (fw_stats->tx_stat.fcoe_tx_byte_cnt) / 4; |
| 618 | bnx2fc_stats->rx_frames += fw_stats->rx_stat0.fcoe_rx_pkt_cnt; |
| 619 | bnx2fc_stats->rx_words += (fw_stats->rx_stat0.fcoe_rx_byte_cnt) / 4; |
| 620 | |
| 621 | bnx2fc_stats->dumped_frames = 0; |
| 622 | bnx2fc_stats->lip_count = 0; |
| 623 | bnx2fc_stats->nos_count = 0; |
| 624 | bnx2fc_stats->loss_of_sync_count = 0; |
| 625 | bnx2fc_stats->loss_of_signal_count = 0; |
| 626 | bnx2fc_stats->prim_seq_protocol_err_count = 0; |
| 627 | |
| 628 | return bnx2fc_stats; |
| 629 | } |
| 630 | |
| 631 | static int bnx2fc_shost_config(struct fc_lport *lport, struct device *dev) |
| 632 | { |
| 633 | struct fcoe_port *port = lport_priv(lport); |
| 634 | struct bnx2fc_hba *hba = port->priv; |
| 635 | struct Scsi_Host *shost = lport->host; |
| 636 | int rc = 0; |
| 637 | |
| 638 | shost->max_cmd_len = BNX2FC_MAX_CMD_LEN; |
| 639 | shost->max_lun = BNX2FC_MAX_LUN; |
| 640 | shost->max_id = BNX2FC_MAX_FCP_TGT; |
| 641 | shost->max_channel = 0; |
| 642 | if (lport->vport) |
| 643 | shost->transportt = bnx2fc_vport_xport_template; |
| 644 | else |
| 645 | shost->transportt = bnx2fc_transport_template; |
| 646 | |
| 647 | /* Add the new host to SCSI-ml */ |
| 648 | rc = scsi_add_host(lport->host, dev); |
| 649 | if (rc) { |
| 650 | printk(KERN_ERR PFX "Error on scsi_add_host\n"); |
| 651 | return rc; |
| 652 | } |
| 653 | if (!lport->vport) |
| 654 | fc_host_max_npiv_vports(lport->host) = USHRT_MAX; |
| 655 | sprintf(fc_host_symbolic_name(lport->host), "%s v%s over %s", |
| 656 | BNX2FC_NAME, BNX2FC_VERSION, |
| 657 | hba->netdev->name); |
| 658 | |
| 659 | return 0; |
| 660 | } |
| 661 | |
Bhanu Gollapudi | 853e2bd | 2011-02-04 12:10:34 -0800 | [diff] [blame] | 662 | static void bnx2fc_link_speed_update(struct fc_lport *lport) |
| 663 | { |
| 664 | struct fcoe_port *port = lport_priv(lport); |
| 665 | struct bnx2fc_hba *hba = port->priv; |
| 666 | struct net_device *netdev = hba->netdev; |
| 667 | struct ethtool_cmd ecmd = { ETHTOOL_GSET }; |
| 668 | |
| 669 | if (!dev_ethtool_get_settings(netdev, &ecmd)) { |
| 670 | lport->link_supported_speeds &= |
| 671 | ~(FC_PORTSPEED_1GBIT | FC_PORTSPEED_10GBIT); |
| 672 | if (ecmd.supported & (SUPPORTED_1000baseT_Half | |
| 673 | SUPPORTED_1000baseT_Full)) |
| 674 | lport->link_supported_speeds |= FC_PORTSPEED_1GBIT; |
| 675 | if (ecmd.supported & SUPPORTED_10000baseT_Full) |
| 676 | lport->link_supported_speeds |= FC_PORTSPEED_10GBIT; |
| 677 | |
| 678 | if (ecmd.speed == SPEED_1000) |
| 679 | lport->link_speed = FC_PORTSPEED_1GBIT; |
| 680 | if (ecmd.speed == SPEED_10000) |
| 681 | lport->link_speed = FC_PORTSPEED_10GBIT; |
| 682 | } |
| 683 | return; |
| 684 | } |
| 685 | static int bnx2fc_link_ok(struct fc_lport *lport) |
| 686 | { |
| 687 | struct fcoe_port *port = lport_priv(lport); |
| 688 | struct bnx2fc_hba *hba = port->priv; |
| 689 | struct net_device *dev = hba->phys_dev; |
| 690 | int rc = 0; |
| 691 | |
| 692 | if ((dev->flags & IFF_UP) && netif_carrier_ok(dev)) |
| 693 | clear_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state); |
| 694 | else { |
| 695 | set_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state); |
| 696 | rc = -1; |
| 697 | } |
| 698 | return rc; |
| 699 | } |
| 700 | |
| 701 | /** |
| 702 | * bnx2fc_get_link_state - get network link state |
| 703 | * |
| 704 | * @hba: adapter instance pointer |
| 705 | * |
| 706 | * updates adapter structure flag based on netdev state |
| 707 | */ |
| 708 | void bnx2fc_get_link_state(struct bnx2fc_hba *hba) |
| 709 | { |
| 710 | if (test_bit(__LINK_STATE_NOCARRIER, &hba->netdev->state)) |
| 711 | set_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state); |
| 712 | else |
| 713 | clear_bit(ADAPTER_STATE_LINK_DOWN, &hba->adapter_state); |
| 714 | } |
| 715 | |
| 716 | static int bnx2fc_net_config(struct fc_lport *lport) |
| 717 | { |
| 718 | struct bnx2fc_hba *hba; |
| 719 | struct fcoe_port *port; |
| 720 | u64 wwnn, wwpn; |
| 721 | |
| 722 | port = lport_priv(lport); |
| 723 | hba = port->priv; |
| 724 | |
| 725 | /* require support for get_pauseparam ethtool op. */ |
| 726 | if (!hba->phys_dev->ethtool_ops || |
| 727 | !hba->phys_dev->ethtool_ops->get_pauseparam) |
| 728 | return -EOPNOTSUPP; |
| 729 | |
Bhanu Gollapudi | 1294bfe | 2011-03-17 17:13:34 -0700 | [diff] [blame] | 730 | if (fc_set_mfs(lport, BNX2FC_MFS)) |
Bhanu Gollapudi | 853e2bd | 2011-02-04 12:10:34 -0800 | [diff] [blame] | 731 | return -EINVAL; |
| 732 | |
| 733 | skb_queue_head_init(&port->fcoe_pending_queue); |
| 734 | port->fcoe_pending_queue_active = 0; |
| 735 | setup_timer(&port->timer, fcoe_queue_timer, (unsigned long) lport); |
| 736 | |
| 737 | bnx2fc_link_speed_update(lport); |
| 738 | |
| 739 | if (!lport->vport) { |
| 740 | wwnn = fcoe_wwn_from_mac(hba->ctlr.ctl_src_addr, 1, 0); |
| 741 | BNX2FC_HBA_DBG(lport, "WWNN = 0x%llx\n", wwnn); |
| 742 | fc_set_wwnn(lport, wwnn); |
| 743 | |
| 744 | wwpn = fcoe_wwn_from_mac(hba->ctlr.ctl_src_addr, 2, 0); |
| 745 | BNX2FC_HBA_DBG(lport, "WWPN = 0x%llx\n", wwpn); |
| 746 | fc_set_wwpn(lport, wwpn); |
| 747 | } |
| 748 | |
| 749 | return 0; |
| 750 | } |
| 751 | |
| 752 | static void bnx2fc_destroy_timer(unsigned long data) |
| 753 | { |
| 754 | struct bnx2fc_hba *hba = (struct bnx2fc_hba *)data; |
| 755 | |
| 756 | BNX2FC_HBA_DBG(hba->ctlr.lp, "ERROR:bnx2fc_destroy_timer - " |
| 757 | "Destroy compl not received!!\n"); |
| 758 | hba->flags |= BNX2FC_FLAG_DESTROY_CMPL; |
| 759 | wake_up_interruptible(&hba->destroy_wait); |
| 760 | } |
| 761 | |
| 762 | /** |
| 763 | * bnx2fc_indicate_netevent - Generic netdev event handler |
| 764 | * |
| 765 | * @context: adapter structure pointer |
| 766 | * @event: event type |
| 767 | * |
| 768 | * Handles NETDEV_UP, NETDEV_DOWN, NETDEV_GOING_DOWN,NETDEV_CHANGE and |
| 769 | * NETDEV_CHANGE_MTU events |
| 770 | */ |
| 771 | static void bnx2fc_indicate_netevent(void *context, unsigned long event) |
| 772 | { |
| 773 | struct bnx2fc_hba *hba = (struct bnx2fc_hba *)context; |
| 774 | struct fc_lport *lport = hba->ctlr.lp; |
| 775 | struct fc_lport *vport; |
| 776 | u32 link_possible = 1; |
| 777 | |
| 778 | if (!test_bit(BNX2FC_CREATE_DONE, &hba->init_done)) { |
| 779 | BNX2FC_MISC_DBG("driver not ready. event=%s %ld\n", |
| 780 | hba->netdev->name, event); |
| 781 | return; |
| 782 | } |
| 783 | |
| 784 | /* |
| 785 | * ASSUMPTION: |
| 786 | * indicate_netevent cannot be called from cnic unless bnx2fc |
| 787 | * does register_device |
| 788 | */ |
| 789 | BUG_ON(!lport); |
| 790 | |
| 791 | BNX2FC_HBA_DBG(lport, "enter netevent handler - event=%s %ld\n", |
| 792 | hba->netdev->name, event); |
| 793 | |
| 794 | switch (event) { |
| 795 | case NETDEV_UP: |
| 796 | BNX2FC_HBA_DBG(lport, "Port up, adapter_state = %ld\n", |
| 797 | hba->adapter_state); |
| 798 | if (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state)) |
| 799 | printk(KERN_ERR "indicate_netevent: "\ |
| 800 | "adapter is not UP!!\n"); |
Bhanu Gollapudi | 853e2bd | 2011-02-04 12:10:34 -0800 | [diff] [blame] | 801 | break; |
| 802 | |
| 803 | case NETDEV_DOWN: |
| 804 | BNX2FC_HBA_DBG(lport, "Port down\n"); |
| 805 | clear_bit(ADAPTER_STATE_GOING_DOWN, &hba->adapter_state); |
| 806 | clear_bit(ADAPTER_STATE_UP, &hba->adapter_state); |
| 807 | link_possible = 0; |
| 808 | break; |
| 809 | |
| 810 | case NETDEV_GOING_DOWN: |
| 811 | BNX2FC_HBA_DBG(lport, "Port going down\n"); |
| 812 | set_bit(ADAPTER_STATE_GOING_DOWN, &hba->adapter_state); |
| 813 | link_possible = 0; |
| 814 | break; |
| 815 | |
| 816 | case NETDEV_CHANGE: |
| 817 | BNX2FC_HBA_DBG(lport, "NETDEV_CHANGE\n"); |
| 818 | break; |
| 819 | |
| 820 | default: |
| 821 | printk(KERN_ERR PFX "Unkonwn netevent %ld", event); |
| 822 | return; |
| 823 | } |
| 824 | |
| 825 | bnx2fc_link_speed_update(lport); |
| 826 | |
| 827 | if (link_possible && !bnx2fc_link_ok(lport)) { |
| 828 | printk(KERN_ERR "indicate_netevent: call ctlr_link_up\n"); |
| 829 | fcoe_ctlr_link_up(&hba->ctlr); |
| 830 | } else { |
| 831 | printk(KERN_ERR "indicate_netevent: call ctlr_link_down\n"); |
| 832 | if (fcoe_ctlr_link_down(&hba->ctlr)) { |
| 833 | clear_bit(ADAPTER_STATE_READY, &hba->adapter_state); |
| 834 | mutex_lock(&lport->lp_mutex); |
| 835 | list_for_each_entry(vport, &lport->vports, list) |
| 836 | fc_host_port_type(vport->host) = |
| 837 | FC_PORTTYPE_UNKNOWN; |
| 838 | mutex_unlock(&lport->lp_mutex); |
| 839 | fc_host_port_type(lport->host) = FC_PORTTYPE_UNKNOWN; |
| 840 | per_cpu_ptr(lport->dev_stats, |
| 841 | get_cpu())->LinkFailureCount++; |
| 842 | put_cpu(); |
| 843 | fcoe_clean_pending_queue(lport); |
| 844 | |
| 845 | init_waitqueue_head(&hba->shutdown_wait); |
| 846 | BNX2FC_HBA_DBG(lport, "indicate_netevent " |
| 847 | "num_ofld_sess = %d\n", |
| 848 | hba->num_ofld_sess); |
| 849 | hba->wait_for_link_down = 1; |
| 850 | BNX2FC_HBA_DBG(lport, "waiting for uploads to " |
| 851 | "compl proc = %s\n", |
| 852 | current->comm); |
| 853 | wait_event_interruptible(hba->shutdown_wait, |
| 854 | (hba->num_ofld_sess == 0)); |
| 855 | BNX2FC_HBA_DBG(lport, "wakeup - num_ofld_sess = %d\n", |
| 856 | hba->num_ofld_sess); |
| 857 | hba->wait_for_link_down = 0; |
| 858 | |
| 859 | if (signal_pending(current)) |
| 860 | flush_signals(current); |
| 861 | } |
| 862 | } |
| 863 | } |
| 864 | |
| 865 | static int bnx2fc_libfc_config(struct fc_lport *lport) |
| 866 | { |
| 867 | |
| 868 | /* Set the function pointers set by bnx2fc driver */ |
| 869 | memcpy(&lport->tt, &bnx2fc_libfc_fcn_templ, |
| 870 | sizeof(struct libfc_function_template)); |
| 871 | fc_elsct_init(lport); |
| 872 | fc_exch_init(lport); |
| 873 | fc_rport_init(lport); |
| 874 | fc_disc_init(lport); |
| 875 | return 0; |
| 876 | } |
| 877 | |
| 878 | static int bnx2fc_em_config(struct fc_lport *lport) |
| 879 | { |
| 880 | struct fcoe_port *port = lport_priv(lport); |
| 881 | struct bnx2fc_hba *hba = port->priv; |
| 882 | |
| 883 | if (!fc_exch_mgr_alloc(lport, FC_CLASS_3, FCOE_MIN_XID, |
| 884 | FCOE_MAX_XID, NULL)) { |
| 885 | printk(KERN_ERR PFX "em_config:fc_exch_mgr_alloc failed\n"); |
| 886 | return -ENOMEM; |
| 887 | } |
| 888 | |
| 889 | hba->cmd_mgr = bnx2fc_cmd_mgr_alloc(hba, BNX2FC_MIN_XID, |
| 890 | BNX2FC_MAX_XID); |
| 891 | |
| 892 | if (!hba->cmd_mgr) { |
| 893 | printk(KERN_ERR PFX "em_config:bnx2fc_cmd_mgr_alloc failed\n"); |
| 894 | fc_exch_mgr_free(lport); |
| 895 | return -ENOMEM; |
| 896 | } |
| 897 | return 0; |
| 898 | } |
| 899 | |
| 900 | static int bnx2fc_lport_config(struct fc_lport *lport) |
| 901 | { |
| 902 | lport->link_up = 0; |
| 903 | lport->qfull = 0; |
| 904 | lport->max_retry_count = 3; |
| 905 | lport->max_rport_retry_count = 3; |
| 906 | lport->e_d_tov = 2 * 1000; |
| 907 | lport->r_a_tov = 10 * 1000; |
| 908 | |
| 909 | /* REVISIT: enable when supporting tape devices |
| 910 | lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS | |
| 911 | FCP_SPPF_RETRY | FCP_SPPF_CONF_COMPL); |
| 912 | */ |
| 913 | lport->service_params = (FCP_SPPF_INIT_FCN | FCP_SPPF_RD_XRDY_DIS); |
| 914 | lport->does_npiv = 1; |
| 915 | |
| 916 | memset(&lport->rnid_gen, 0, sizeof(struct fc_els_rnid_gen)); |
| 917 | lport->rnid_gen.rnid_atype = BNX2FC_RNID_HBA; |
| 918 | |
| 919 | /* alloc stats structure */ |
| 920 | if (fc_lport_init_stats(lport)) |
| 921 | return -ENOMEM; |
| 922 | |
| 923 | /* Finish fc_lport configuration */ |
| 924 | fc_lport_config(lport); |
| 925 | |
| 926 | return 0; |
| 927 | } |
| 928 | |
| 929 | /** |
| 930 | * bnx2fc_fip_recv - handle a received FIP frame. |
| 931 | * |
| 932 | * @skb: the received skb |
| 933 | * @dev: associated &net_device |
| 934 | * @ptype: the &packet_type structure which was used to register this handler. |
| 935 | * @orig_dev: original receive &net_device, in case @ dev is a bond. |
| 936 | * |
| 937 | * Returns: 0 for success |
| 938 | */ |
| 939 | static int bnx2fc_fip_recv(struct sk_buff *skb, struct net_device *dev, |
| 940 | struct packet_type *ptype, |
| 941 | struct net_device *orig_dev) |
| 942 | { |
| 943 | struct bnx2fc_hba *hba; |
| 944 | hba = container_of(ptype, struct bnx2fc_hba, fip_packet_type); |
| 945 | fcoe_ctlr_recv(&hba->ctlr, skb); |
| 946 | return 0; |
| 947 | } |
| 948 | |
| 949 | /** |
| 950 | * bnx2fc_update_src_mac - Update Ethernet MAC filters. |
| 951 | * |
| 952 | * @fip: FCoE controller. |
| 953 | * @old: Unicast MAC address to delete if the MAC is non-zero. |
| 954 | * @new: Unicast MAC address to add. |
| 955 | * |
| 956 | * Remove any previously-set unicast MAC filter. |
| 957 | * Add secondary FCoE MAC address filter for our OUI. |
| 958 | */ |
| 959 | static void bnx2fc_update_src_mac(struct fc_lport *lport, u8 *addr) |
| 960 | { |
| 961 | struct fcoe_port *port = lport_priv(lport); |
| 962 | |
| 963 | memcpy(port->data_src_addr, addr, ETH_ALEN); |
| 964 | } |
| 965 | |
| 966 | /** |
| 967 | * bnx2fc_get_src_mac - return the ethernet source address for an lport |
| 968 | * |
| 969 | * @lport: libfc port |
| 970 | */ |
| 971 | static u8 *bnx2fc_get_src_mac(struct fc_lport *lport) |
| 972 | { |
| 973 | struct fcoe_port *port; |
| 974 | |
| 975 | port = (struct fcoe_port *)lport_priv(lport); |
| 976 | return port->data_src_addr; |
| 977 | } |
| 978 | |
| 979 | /** |
| 980 | * bnx2fc_fip_send - send an Ethernet-encapsulated FIP frame. |
| 981 | * |
| 982 | * @fip: FCoE controller. |
| 983 | * @skb: FIP Packet. |
| 984 | */ |
| 985 | static void bnx2fc_fip_send(struct fcoe_ctlr *fip, struct sk_buff *skb) |
| 986 | { |
| 987 | skb->dev = bnx2fc_from_ctlr(fip)->netdev; |
| 988 | dev_queue_xmit(skb); |
| 989 | } |
| 990 | |
| 991 | static int bnx2fc_vport_create(struct fc_vport *vport, bool disabled) |
| 992 | { |
| 993 | struct Scsi_Host *shost = vport_to_shost(vport); |
| 994 | struct fc_lport *n_port = shost_priv(shost); |
| 995 | struct fcoe_port *port = lport_priv(n_port); |
| 996 | struct bnx2fc_hba *hba = port->priv; |
| 997 | struct net_device *netdev = hba->netdev; |
| 998 | struct fc_lport *vn_port; |
| 999 | |
| 1000 | if (!test_bit(BNX2FC_FW_INIT_DONE, &hba->init_done)) { |
| 1001 | printk(KERN_ERR PFX "vn ports cannot be created on" |
| 1002 | "this hba\n"); |
| 1003 | return -EIO; |
| 1004 | } |
| 1005 | mutex_lock(&bnx2fc_dev_lock); |
| 1006 | vn_port = bnx2fc_if_create(hba, &vport->dev, 1); |
| 1007 | mutex_unlock(&bnx2fc_dev_lock); |
| 1008 | |
| 1009 | if (IS_ERR(vn_port)) { |
| 1010 | printk(KERN_ERR PFX "bnx2fc_vport_create (%s) failed\n", |
| 1011 | netdev->name); |
| 1012 | return -EIO; |
| 1013 | } |
| 1014 | |
| 1015 | if (disabled) { |
| 1016 | fc_vport_set_state(vport, FC_VPORT_DISABLED); |
| 1017 | } else { |
| 1018 | vn_port->boot_time = jiffies; |
| 1019 | fc_lport_init(vn_port); |
| 1020 | fc_fabric_login(vn_port); |
| 1021 | fc_vport_setlink(vn_port); |
| 1022 | } |
| 1023 | return 0; |
| 1024 | } |
| 1025 | |
| 1026 | static int bnx2fc_vport_destroy(struct fc_vport *vport) |
| 1027 | { |
| 1028 | struct Scsi_Host *shost = vport_to_shost(vport); |
| 1029 | struct fc_lport *n_port = shost_priv(shost); |
| 1030 | struct fc_lport *vn_port = vport->dd_data; |
| 1031 | struct fcoe_port *port = lport_priv(vn_port); |
| 1032 | |
| 1033 | mutex_lock(&n_port->lp_mutex); |
| 1034 | list_del(&vn_port->list); |
| 1035 | mutex_unlock(&n_port->lp_mutex); |
| 1036 | queue_work(bnx2fc_wq, &port->destroy_work); |
| 1037 | return 0; |
| 1038 | } |
| 1039 | |
| 1040 | static int bnx2fc_vport_disable(struct fc_vport *vport, bool disable) |
| 1041 | { |
| 1042 | struct fc_lport *lport = vport->dd_data; |
| 1043 | |
| 1044 | if (disable) { |
| 1045 | fc_vport_set_state(vport, FC_VPORT_DISABLED); |
| 1046 | fc_fabric_logoff(lport); |
| 1047 | } else { |
| 1048 | lport->boot_time = jiffies; |
| 1049 | fc_fabric_login(lport); |
| 1050 | fc_vport_setlink(lport); |
| 1051 | } |
| 1052 | return 0; |
| 1053 | } |
| 1054 | |
| 1055 | |
| 1056 | static int bnx2fc_netdev_setup(struct bnx2fc_hba *hba) |
| 1057 | { |
| 1058 | struct net_device *netdev = hba->netdev; |
| 1059 | struct net_device *physdev = hba->phys_dev; |
| 1060 | struct netdev_hw_addr *ha; |
| 1061 | int sel_san_mac = 0; |
| 1062 | |
Bhanu Gollapudi | 853e2bd | 2011-02-04 12:10:34 -0800 | [diff] [blame] | 1063 | /* setup Source MAC Address */ |
| 1064 | rcu_read_lock(); |
| 1065 | for_each_dev_addr(physdev, ha) { |
| 1066 | BNX2FC_MISC_DBG("net_config: ha->type = %d, fip_mac = ", |
| 1067 | ha->type); |
| 1068 | printk(KERN_INFO "%2x:%2x:%2x:%2x:%2x:%2x\n", ha->addr[0], |
| 1069 | ha->addr[1], ha->addr[2], ha->addr[3], |
| 1070 | ha->addr[4], ha->addr[5]); |
| 1071 | |
| 1072 | if ((ha->type == NETDEV_HW_ADDR_T_SAN) && |
| 1073 | (is_valid_ether_addr(ha->addr))) { |
| 1074 | memcpy(hba->ctlr.ctl_src_addr, ha->addr, ETH_ALEN); |
| 1075 | sel_san_mac = 1; |
| 1076 | BNX2FC_MISC_DBG("Found SAN MAC\n"); |
| 1077 | } |
| 1078 | } |
| 1079 | rcu_read_unlock(); |
| 1080 | |
| 1081 | if (!sel_san_mac) |
| 1082 | return -ENODEV; |
| 1083 | |
| 1084 | hba->fip_packet_type.func = bnx2fc_fip_recv; |
| 1085 | hba->fip_packet_type.type = htons(ETH_P_FIP); |
| 1086 | hba->fip_packet_type.dev = netdev; |
| 1087 | dev_add_pack(&hba->fip_packet_type); |
| 1088 | |
| 1089 | hba->fcoe_packet_type.func = bnx2fc_rcv; |
| 1090 | hba->fcoe_packet_type.type = __constant_htons(ETH_P_FCOE); |
| 1091 | hba->fcoe_packet_type.dev = netdev; |
| 1092 | dev_add_pack(&hba->fcoe_packet_type); |
| 1093 | |
| 1094 | return 0; |
| 1095 | } |
| 1096 | |
| 1097 | static int bnx2fc_attach_transport(void) |
| 1098 | { |
| 1099 | bnx2fc_transport_template = |
| 1100 | fc_attach_transport(&bnx2fc_transport_function); |
| 1101 | |
| 1102 | if (bnx2fc_transport_template == NULL) { |
| 1103 | printk(KERN_ERR PFX "Failed to attach FC transport\n"); |
| 1104 | return -ENODEV; |
| 1105 | } |
| 1106 | |
| 1107 | bnx2fc_vport_xport_template = |
| 1108 | fc_attach_transport(&bnx2fc_vport_xport_function); |
| 1109 | if (bnx2fc_vport_xport_template == NULL) { |
| 1110 | printk(KERN_ERR PFX |
| 1111 | "Failed to attach FC transport for vport\n"); |
| 1112 | fc_release_transport(bnx2fc_transport_template); |
| 1113 | bnx2fc_transport_template = NULL; |
| 1114 | return -ENODEV; |
| 1115 | } |
| 1116 | return 0; |
| 1117 | } |
| 1118 | static void bnx2fc_release_transport(void) |
| 1119 | { |
| 1120 | fc_release_transport(bnx2fc_transport_template); |
| 1121 | fc_release_transport(bnx2fc_vport_xport_template); |
| 1122 | bnx2fc_transport_template = NULL; |
| 1123 | bnx2fc_vport_xport_template = NULL; |
| 1124 | } |
| 1125 | |
| 1126 | static void bnx2fc_interface_release(struct kref *kref) |
| 1127 | { |
| 1128 | struct bnx2fc_hba *hba; |
| 1129 | struct net_device *netdev; |
| 1130 | struct net_device *phys_dev; |
| 1131 | |
| 1132 | hba = container_of(kref, struct bnx2fc_hba, kref); |
| 1133 | BNX2FC_HBA_DBG(hba->ctlr.lp, "Interface is being released\n"); |
| 1134 | |
| 1135 | netdev = hba->netdev; |
| 1136 | phys_dev = hba->phys_dev; |
| 1137 | |
| 1138 | /* tear-down FIP controller */ |
| 1139 | if (test_and_clear_bit(BNX2FC_CTLR_INIT_DONE, &hba->init_done)) |
| 1140 | fcoe_ctlr_destroy(&hba->ctlr); |
| 1141 | |
| 1142 | /* Free the command manager */ |
| 1143 | if (hba->cmd_mgr) { |
| 1144 | bnx2fc_cmd_mgr_free(hba->cmd_mgr); |
| 1145 | hba->cmd_mgr = NULL; |
| 1146 | } |
| 1147 | dev_put(netdev); |
| 1148 | module_put(THIS_MODULE); |
| 1149 | } |
| 1150 | |
| 1151 | static inline void bnx2fc_interface_get(struct bnx2fc_hba *hba) |
| 1152 | { |
| 1153 | kref_get(&hba->kref); |
| 1154 | } |
| 1155 | |
| 1156 | static inline void bnx2fc_interface_put(struct bnx2fc_hba *hba) |
| 1157 | { |
| 1158 | kref_put(&hba->kref, bnx2fc_interface_release); |
| 1159 | } |
| 1160 | static void bnx2fc_interface_destroy(struct bnx2fc_hba *hba) |
| 1161 | { |
| 1162 | bnx2fc_unbind_pcidev(hba); |
| 1163 | kfree(hba); |
| 1164 | } |
| 1165 | |
| 1166 | /** |
| 1167 | * bnx2fc_interface_create - create a new fcoe instance |
| 1168 | * |
| 1169 | * @cnic: pointer to cnic device |
| 1170 | * |
| 1171 | * Creates a new FCoE instance on the given device which include allocating |
| 1172 | * hba structure, scsi_host and lport structures. |
| 1173 | */ |
| 1174 | static struct bnx2fc_hba *bnx2fc_interface_create(struct cnic_dev *cnic) |
| 1175 | { |
| 1176 | struct bnx2fc_hba *hba; |
| 1177 | int rc; |
| 1178 | |
| 1179 | hba = kzalloc(sizeof(*hba), GFP_KERNEL); |
| 1180 | if (!hba) { |
| 1181 | printk(KERN_ERR PFX "Unable to allocate hba structure\n"); |
| 1182 | return NULL; |
| 1183 | } |
| 1184 | spin_lock_init(&hba->hba_lock); |
| 1185 | mutex_init(&hba->hba_mutex); |
| 1186 | |
| 1187 | hba->cnic = cnic; |
| 1188 | rc = bnx2fc_bind_pcidev(hba); |
| 1189 | if (rc) |
| 1190 | goto bind_err; |
| 1191 | hba->phys_dev = cnic->netdev; |
| 1192 | /* will get overwritten after we do vlan discovery */ |
| 1193 | hba->netdev = hba->phys_dev; |
| 1194 | |
| 1195 | init_waitqueue_head(&hba->shutdown_wait); |
| 1196 | init_waitqueue_head(&hba->destroy_wait); |
| 1197 | |
| 1198 | return hba; |
| 1199 | bind_err: |
| 1200 | printk(KERN_ERR PFX "create_interface: bind error\n"); |
| 1201 | kfree(hba); |
| 1202 | return NULL; |
| 1203 | } |
| 1204 | |
| 1205 | static int bnx2fc_interface_setup(struct bnx2fc_hba *hba, |
| 1206 | enum fip_state fip_mode) |
| 1207 | { |
| 1208 | int rc = 0; |
| 1209 | struct net_device *netdev = hba->netdev; |
| 1210 | struct fcoe_ctlr *fip = &hba->ctlr; |
| 1211 | |
| 1212 | dev_hold(netdev); |
| 1213 | kref_init(&hba->kref); |
| 1214 | |
| 1215 | hba->flags = 0; |
| 1216 | |
| 1217 | /* Initialize FIP */ |
| 1218 | memset(fip, 0, sizeof(*fip)); |
| 1219 | fcoe_ctlr_init(fip, fip_mode); |
| 1220 | hba->ctlr.send = bnx2fc_fip_send; |
| 1221 | hba->ctlr.update_mac = bnx2fc_update_src_mac; |
| 1222 | hba->ctlr.get_src_addr = bnx2fc_get_src_mac; |
| 1223 | set_bit(BNX2FC_CTLR_INIT_DONE, &hba->init_done); |
| 1224 | |
| 1225 | rc = bnx2fc_netdev_setup(hba); |
| 1226 | if (rc) |
| 1227 | goto setup_err; |
| 1228 | |
| 1229 | hba->next_conn_id = 0; |
| 1230 | |
| 1231 | memset(hba->tgt_ofld_list, 0, sizeof(hba->tgt_ofld_list)); |
| 1232 | hba->num_ofld_sess = 0; |
| 1233 | |
| 1234 | return 0; |
| 1235 | |
| 1236 | setup_err: |
| 1237 | fcoe_ctlr_destroy(&hba->ctlr); |
| 1238 | dev_put(netdev); |
| 1239 | bnx2fc_interface_put(hba); |
| 1240 | return rc; |
| 1241 | } |
| 1242 | |
| 1243 | /** |
| 1244 | * bnx2fc_if_create - Create FCoE instance on a given interface |
| 1245 | * |
| 1246 | * @hba: FCoE interface to create a local port on |
| 1247 | * @parent: Device pointer to be the parent in sysfs for the SCSI host |
| 1248 | * @npiv: Indicates if the port is vport or not |
| 1249 | * |
| 1250 | * Creates a fc_lport instance and a Scsi_Host instance and configure them. |
| 1251 | * |
| 1252 | * Returns: Allocated fc_lport or an error pointer |
| 1253 | */ |
| 1254 | static struct fc_lport *bnx2fc_if_create(struct bnx2fc_hba *hba, |
| 1255 | struct device *parent, int npiv) |
| 1256 | { |
| 1257 | struct fc_lport *lport = NULL; |
| 1258 | struct fcoe_port *port; |
| 1259 | struct Scsi_Host *shost; |
| 1260 | struct fc_vport *vport = dev_to_vport(parent); |
| 1261 | int rc = 0; |
| 1262 | |
| 1263 | /* Allocate Scsi_Host structure */ |
| 1264 | if (!npiv) { |
| 1265 | lport = libfc_host_alloc(&bnx2fc_shost_template, |
| 1266 | sizeof(struct fcoe_port)); |
| 1267 | } else { |
| 1268 | lport = libfc_vport_create(vport, |
| 1269 | sizeof(struct fcoe_port)); |
| 1270 | } |
| 1271 | |
| 1272 | if (!lport) { |
| 1273 | printk(KERN_ERR PFX "could not allocate scsi host structure\n"); |
| 1274 | return NULL; |
| 1275 | } |
| 1276 | shost = lport->host; |
| 1277 | port = lport_priv(lport); |
| 1278 | port->lport = lport; |
| 1279 | port->priv = hba; |
| 1280 | INIT_WORK(&port->destroy_work, bnx2fc_destroy_work); |
| 1281 | |
| 1282 | /* Configure fcoe_port */ |
| 1283 | rc = bnx2fc_lport_config(lport); |
| 1284 | if (rc) |
| 1285 | goto lp_config_err; |
| 1286 | |
| 1287 | if (npiv) { |
| 1288 | vport = dev_to_vport(parent); |
| 1289 | printk(KERN_ERR PFX "Setting vport names, 0x%llX 0x%llX\n", |
| 1290 | vport->node_name, vport->port_name); |
| 1291 | fc_set_wwnn(lport, vport->node_name); |
| 1292 | fc_set_wwpn(lport, vport->port_name); |
| 1293 | } |
| 1294 | /* Configure netdev and networking properties of the lport */ |
| 1295 | rc = bnx2fc_net_config(lport); |
| 1296 | if (rc) { |
| 1297 | printk(KERN_ERR PFX "Error on bnx2fc_net_config\n"); |
| 1298 | goto lp_config_err; |
| 1299 | } |
| 1300 | |
| 1301 | rc = bnx2fc_shost_config(lport, parent); |
| 1302 | if (rc) { |
| 1303 | printk(KERN_ERR PFX "Couldnt configure shost for %s\n", |
| 1304 | hba->netdev->name); |
| 1305 | goto lp_config_err; |
| 1306 | } |
| 1307 | |
| 1308 | /* Initialize the libfc library */ |
| 1309 | rc = bnx2fc_libfc_config(lport); |
| 1310 | if (rc) { |
| 1311 | printk(KERN_ERR PFX "Couldnt configure libfc\n"); |
| 1312 | goto shost_err; |
| 1313 | } |
| 1314 | fc_host_port_type(lport->host) = FC_PORTTYPE_UNKNOWN; |
| 1315 | |
| 1316 | /* Allocate exchange manager */ |
| 1317 | if (!npiv) { |
| 1318 | rc = bnx2fc_em_config(lport); |
| 1319 | if (rc) { |
| 1320 | printk(KERN_ERR PFX "Error on bnx2fc_em_config\n"); |
| 1321 | goto shost_err; |
| 1322 | } |
| 1323 | } |
| 1324 | |
| 1325 | bnx2fc_interface_get(hba); |
| 1326 | return lport; |
| 1327 | |
| 1328 | shost_err: |
| 1329 | scsi_remove_host(shost); |
| 1330 | lp_config_err: |
| 1331 | scsi_host_put(lport->host); |
| 1332 | return NULL; |
| 1333 | } |
| 1334 | |
| 1335 | static void bnx2fc_netdev_cleanup(struct bnx2fc_hba *hba) |
| 1336 | { |
| 1337 | /* Dont listen for Ethernet packets anymore */ |
| 1338 | __dev_remove_pack(&hba->fcoe_packet_type); |
| 1339 | __dev_remove_pack(&hba->fip_packet_type); |
| 1340 | synchronize_net(); |
| 1341 | } |
| 1342 | |
| 1343 | static void bnx2fc_if_destroy(struct fc_lport *lport) |
| 1344 | { |
| 1345 | struct fcoe_port *port = lport_priv(lport); |
| 1346 | struct bnx2fc_hba *hba = port->priv; |
| 1347 | |
| 1348 | BNX2FC_HBA_DBG(hba->ctlr.lp, "ENTERED bnx2fc_if_destroy\n"); |
| 1349 | /* Stop the transmit retry timer */ |
| 1350 | del_timer_sync(&port->timer); |
| 1351 | |
| 1352 | /* Free existing transmit skbs */ |
| 1353 | fcoe_clean_pending_queue(lport); |
| 1354 | |
| 1355 | bnx2fc_interface_put(hba); |
| 1356 | |
| 1357 | /* Free queued packets for the receive thread */ |
| 1358 | bnx2fc_clean_rx_queue(lport); |
| 1359 | |
| 1360 | /* Detach from scsi-ml */ |
| 1361 | fc_remove_host(lport->host); |
| 1362 | scsi_remove_host(lport->host); |
| 1363 | |
| 1364 | /* |
| 1365 | * Note that only the physical lport will have the exchange manager. |
| 1366 | * for vports, this function is NOP |
| 1367 | */ |
| 1368 | fc_exch_mgr_free(lport); |
| 1369 | |
| 1370 | /* Free memory used by statistical counters */ |
| 1371 | fc_lport_free_stats(lport); |
| 1372 | |
| 1373 | /* Release Scsi_Host */ |
| 1374 | scsi_host_put(lport->host); |
| 1375 | } |
| 1376 | |
| 1377 | /** |
| 1378 | * bnx2fc_destroy - Destroy a bnx2fc FCoE interface |
| 1379 | * |
| 1380 | * @buffer: The name of the Ethernet interface to be destroyed |
| 1381 | * @kp: The associated kernel parameter |
| 1382 | * |
| 1383 | * Called from sysfs. |
| 1384 | * |
| 1385 | * Returns: 0 for success |
| 1386 | */ |
| 1387 | static int bnx2fc_destroy(struct net_device *netdev) |
| 1388 | { |
| 1389 | struct bnx2fc_hba *hba = NULL; |
| 1390 | struct net_device *phys_dev; |
| 1391 | int rc = 0; |
| 1392 | |
Nithin Sujir | 6702ca1 | 2011-03-17 17:13:27 -0700 | [diff] [blame] | 1393 | rtnl_lock(); |
Bhanu Gollapudi | 853e2bd | 2011-02-04 12:10:34 -0800 | [diff] [blame] | 1394 | |
| 1395 | mutex_lock(&bnx2fc_dev_lock); |
Bhanu Gollapudi | 853e2bd | 2011-02-04 12:10:34 -0800 | [diff] [blame] | 1396 | /* obtain physical netdev */ |
| 1397 | if (netdev->priv_flags & IFF_802_1Q_VLAN) |
| 1398 | phys_dev = vlan_dev_real_dev(netdev); |
| 1399 | else { |
| 1400 | printk(KERN_ERR PFX "Not a vlan device\n"); |
| 1401 | rc = -ENODEV; |
| 1402 | goto netdev_err; |
| 1403 | } |
| 1404 | |
| 1405 | hba = bnx2fc_hba_lookup(phys_dev); |
| 1406 | if (!hba || !hba->ctlr.lp) { |
| 1407 | rc = -ENODEV; |
| 1408 | printk(KERN_ERR PFX "bnx2fc_destroy: hba or lport not found\n"); |
| 1409 | goto netdev_err; |
| 1410 | } |
| 1411 | |
| 1412 | if (!test_bit(BNX2FC_CREATE_DONE, &hba->init_done)) { |
| 1413 | printk(KERN_ERR PFX "bnx2fc_destroy: Create not called\n"); |
| 1414 | goto netdev_err; |
| 1415 | } |
| 1416 | |
| 1417 | bnx2fc_netdev_cleanup(hba); |
| 1418 | |
| 1419 | bnx2fc_stop(hba); |
| 1420 | |
| 1421 | bnx2fc_if_destroy(hba->ctlr.lp); |
| 1422 | |
| 1423 | destroy_workqueue(hba->timer_work_queue); |
| 1424 | |
| 1425 | if (test_bit(BNX2FC_FW_INIT_DONE, &hba->init_done)) |
| 1426 | bnx2fc_fw_destroy(hba); |
| 1427 | |
| 1428 | clear_bit(BNX2FC_CREATE_DONE, &hba->init_done); |
| 1429 | netdev_err: |
| 1430 | mutex_unlock(&bnx2fc_dev_lock); |
| 1431 | rtnl_unlock(); |
| 1432 | return rc; |
| 1433 | } |
| 1434 | |
| 1435 | static void bnx2fc_destroy_work(struct work_struct *work) |
| 1436 | { |
| 1437 | struct fcoe_port *port; |
| 1438 | struct fc_lport *lport; |
| 1439 | |
| 1440 | port = container_of(work, struct fcoe_port, destroy_work); |
| 1441 | lport = port->lport; |
| 1442 | |
| 1443 | BNX2FC_HBA_DBG(lport, "Entered bnx2fc_destroy_work\n"); |
| 1444 | |
| 1445 | bnx2fc_port_shutdown(lport); |
| 1446 | rtnl_lock(); |
| 1447 | mutex_lock(&bnx2fc_dev_lock); |
| 1448 | bnx2fc_if_destroy(lport); |
| 1449 | mutex_unlock(&bnx2fc_dev_lock); |
| 1450 | rtnl_unlock(); |
| 1451 | } |
| 1452 | |
| 1453 | static void bnx2fc_unbind_adapter_devices(struct bnx2fc_hba *hba) |
| 1454 | { |
| 1455 | bnx2fc_free_fw_resc(hba); |
| 1456 | bnx2fc_free_task_ctx(hba); |
| 1457 | } |
| 1458 | |
| 1459 | /** |
| 1460 | * bnx2fc_bind_adapter_devices - binds bnx2fc adapter with the associated |
| 1461 | * pci structure |
| 1462 | * |
| 1463 | * @hba: Adapter instance |
| 1464 | */ |
| 1465 | static int bnx2fc_bind_adapter_devices(struct bnx2fc_hba *hba) |
| 1466 | { |
| 1467 | if (bnx2fc_setup_task_ctx(hba)) |
| 1468 | goto mem_err; |
| 1469 | |
| 1470 | if (bnx2fc_setup_fw_resc(hba)) |
| 1471 | goto mem_err; |
| 1472 | |
| 1473 | return 0; |
| 1474 | mem_err: |
| 1475 | bnx2fc_unbind_adapter_devices(hba); |
| 1476 | return -ENOMEM; |
| 1477 | } |
| 1478 | |
| 1479 | static int bnx2fc_bind_pcidev(struct bnx2fc_hba *hba) |
| 1480 | { |
| 1481 | struct cnic_dev *cnic; |
| 1482 | |
| 1483 | if (!hba->cnic) { |
| 1484 | printk(KERN_ERR PFX "cnic is NULL\n"); |
| 1485 | return -ENODEV; |
| 1486 | } |
| 1487 | cnic = hba->cnic; |
| 1488 | hba->pcidev = cnic->pcidev; |
| 1489 | if (hba->pcidev) |
| 1490 | pci_dev_get(hba->pcidev); |
| 1491 | |
| 1492 | return 0; |
| 1493 | } |
| 1494 | |
| 1495 | static void bnx2fc_unbind_pcidev(struct bnx2fc_hba *hba) |
| 1496 | { |
| 1497 | if (hba->pcidev) |
| 1498 | pci_dev_put(hba->pcidev); |
| 1499 | hba->pcidev = NULL; |
| 1500 | } |
| 1501 | |
| 1502 | |
| 1503 | |
| 1504 | /** |
| 1505 | * bnx2fc_ulp_start - cnic callback to initialize & start adapter instance |
| 1506 | * |
| 1507 | * @handle: transport handle pointing to adapter struture |
| 1508 | * |
| 1509 | * This function maps adapter structure to pcidev structure and initiates |
| 1510 | * firmware handshake to enable/initialize on-chip FCoE components. |
| 1511 | * This bnx2fc - cnic interface api callback is used after following |
| 1512 | * conditions are met - |
| 1513 | * a) underlying network interface is up (marked by event NETDEV_UP |
| 1514 | * from netdev |
| 1515 | * b) bnx2fc adatper structure is registered. |
| 1516 | */ |
| 1517 | static void bnx2fc_ulp_start(void *handle) |
| 1518 | { |
| 1519 | struct bnx2fc_hba *hba = handle; |
| 1520 | struct fc_lport *lport = hba->ctlr.lp; |
| 1521 | |
| 1522 | BNX2FC_MISC_DBG("Entered %s\n", __func__); |
| 1523 | mutex_lock(&bnx2fc_dev_lock); |
| 1524 | |
| 1525 | if (test_bit(BNX2FC_FW_INIT_DONE, &hba->init_done)) |
| 1526 | goto start_disc; |
| 1527 | |
| 1528 | if (test_bit(BNX2FC_CREATE_DONE, &hba->init_done)) |
| 1529 | bnx2fc_fw_init(hba); |
| 1530 | |
| 1531 | start_disc: |
| 1532 | mutex_unlock(&bnx2fc_dev_lock); |
| 1533 | |
| 1534 | BNX2FC_MISC_DBG("bnx2fc started.\n"); |
| 1535 | |
| 1536 | /* Kick off Fabric discovery*/ |
| 1537 | if (test_bit(BNX2FC_CREATE_DONE, &hba->init_done)) { |
| 1538 | printk(KERN_ERR PFX "ulp_init: start discovery\n"); |
| 1539 | lport->tt.frame_send = bnx2fc_xmit; |
| 1540 | bnx2fc_start_disc(hba); |
| 1541 | } |
| 1542 | } |
| 1543 | |
| 1544 | static void bnx2fc_port_shutdown(struct fc_lport *lport) |
| 1545 | { |
| 1546 | BNX2FC_MISC_DBG("Entered %s\n", __func__); |
| 1547 | fc_fabric_logoff(lport); |
| 1548 | fc_lport_destroy(lport); |
| 1549 | } |
| 1550 | |
| 1551 | static void bnx2fc_stop(struct bnx2fc_hba *hba) |
| 1552 | { |
| 1553 | struct fc_lport *lport; |
| 1554 | struct fc_lport *vport; |
| 1555 | |
| 1556 | BNX2FC_MISC_DBG("ENTERED %s - init_done = %ld\n", __func__, |
| 1557 | hba->init_done); |
| 1558 | if (test_bit(BNX2FC_FW_INIT_DONE, &hba->init_done) && |
| 1559 | test_bit(BNX2FC_CREATE_DONE, &hba->init_done)) { |
| 1560 | lport = hba->ctlr.lp; |
| 1561 | bnx2fc_port_shutdown(lport); |
| 1562 | BNX2FC_HBA_DBG(lport, "bnx2fc_stop: waiting for %d " |
| 1563 | "offloaded sessions\n", |
| 1564 | hba->num_ofld_sess); |
| 1565 | wait_event_interruptible(hba->shutdown_wait, |
| 1566 | (hba->num_ofld_sess == 0)); |
| 1567 | mutex_lock(&lport->lp_mutex); |
| 1568 | list_for_each_entry(vport, &lport->vports, list) |
| 1569 | fc_host_port_type(vport->host) = FC_PORTTYPE_UNKNOWN; |
| 1570 | mutex_unlock(&lport->lp_mutex); |
| 1571 | fc_host_port_type(lport->host) = FC_PORTTYPE_UNKNOWN; |
| 1572 | fcoe_ctlr_link_down(&hba->ctlr); |
| 1573 | fcoe_clean_pending_queue(lport); |
| 1574 | |
| 1575 | mutex_lock(&hba->hba_mutex); |
| 1576 | clear_bit(ADAPTER_STATE_UP, &hba->adapter_state); |
| 1577 | clear_bit(ADAPTER_STATE_GOING_DOWN, &hba->adapter_state); |
| 1578 | |
| 1579 | clear_bit(ADAPTER_STATE_READY, &hba->adapter_state); |
| 1580 | mutex_unlock(&hba->hba_mutex); |
| 1581 | } |
| 1582 | } |
| 1583 | |
| 1584 | static int bnx2fc_fw_init(struct bnx2fc_hba *hba) |
| 1585 | { |
| 1586 | #define BNX2FC_INIT_POLL_TIME (1000 / HZ) |
| 1587 | int rc = -1; |
| 1588 | int i = HZ; |
| 1589 | |
| 1590 | rc = bnx2fc_bind_adapter_devices(hba); |
| 1591 | if (rc) { |
| 1592 | printk(KERN_ALERT PFX |
| 1593 | "bnx2fc_bind_adapter_devices failed - rc = %d\n", rc); |
| 1594 | goto err_out; |
| 1595 | } |
| 1596 | |
| 1597 | rc = bnx2fc_send_fw_fcoe_init_msg(hba); |
| 1598 | if (rc) { |
| 1599 | printk(KERN_ALERT PFX |
| 1600 | "bnx2fc_send_fw_fcoe_init_msg failed - rc = %d\n", rc); |
| 1601 | goto err_unbind; |
| 1602 | } |
| 1603 | |
| 1604 | /* |
| 1605 | * Wait until the adapter init message is complete, and adapter |
| 1606 | * state is UP. |
| 1607 | */ |
| 1608 | while (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state) && i--) |
| 1609 | msleep(BNX2FC_INIT_POLL_TIME); |
| 1610 | |
| 1611 | if (!test_bit(ADAPTER_STATE_UP, &hba->adapter_state)) { |
| 1612 | printk(KERN_ERR PFX "bnx2fc_start: %s failed to initialize. " |
| 1613 | "Ignoring...\n", |
| 1614 | hba->cnic->netdev->name); |
| 1615 | rc = -1; |
| 1616 | goto err_unbind; |
| 1617 | } |
| 1618 | |
| 1619 | |
| 1620 | /* Mark HBA to indicate that the FW INIT is done */ |
| 1621 | set_bit(BNX2FC_FW_INIT_DONE, &hba->init_done); |
| 1622 | return 0; |
| 1623 | |
| 1624 | err_unbind: |
| 1625 | bnx2fc_unbind_adapter_devices(hba); |
| 1626 | err_out: |
| 1627 | return rc; |
| 1628 | } |
| 1629 | |
| 1630 | static void bnx2fc_fw_destroy(struct bnx2fc_hba *hba) |
| 1631 | { |
| 1632 | if (test_and_clear_bit(BNX2FC_FW_INIT_DONE, &hba->init_done)) { |
| 1633 | if (bnx2fc_send_fw_fcoe_destroy_msg(hba) == 0) { |
| 1634 | init_timer(&hba->destroy_timer); |
| 1635 | hba->destroy_timer.expires = BNX2FC_FW_TIMEOUT + |
| 1636 | jiffies; |
| 1637 | hba->destroy_timer.function = bnx2fc_destroy_timer; |
| 1638 | hba->destroy_timer.data = (unsigned long)hba; |
| 1639 | add_timer(&hba->destroy_timer); |
| 1640 | wait_event_interruptible(hba->destroy_wait, |
| 1641 | (hba->flags & |
| 1642 | BNX2FC_FLAG_DESTROY_CMPL)); |
| 1643 | /* This should never happen */ |
| 1644 | if (signal_pending(current)) |
| 1645 | flush_signals(current); |
| 1646 | |
| 1647 | del_timer_sync(&hba->destroy_timer); |
| 1648 | } |
| 1649 | bnx2fc_unbind_adapter_devices(hba); |
| 1650 | } |
| 1651 | } |
| 1652 | |
| 1653 | /** |
| 1654 | * bnx2fc_ulp_stop - cnic callback to shutdown adapter instance |
| 1655 | * |
| 1656 | * @handle: transport handle pointing to adapter structure |
| 1657 | * |
| 1658 | * Driver checks if adapter is already in shutdown mode, if not start |
| 1659 | * the shutdown process. |
| 1660 | */ |
| 1661 | static void bnx2fc_ulp_stop(void *handle) |
| 1662 | { |
| 1663 | struct bnx2fc_hba *hba = (struct bnx2fc_hba *)handle; |
| 1664 | |
| 1665 | printk(KERN_ERR "ULP_STOP\n"); |
| 1666 | |
| 1667 | mutex_lock(&bnx2fc_dev_lock); |
| 1668 | bnx2fc_stop(hba); |
| 1669 | bnx2fc_fw_destroy(hba); |
| 1670 | mutex_unlock(&bnx2fc_dev_lock); |
| 1671 | } |
| 1672 | |
| 1673 | static void bnx2fc_start_disc(struct bnx2fc_hba *hba) |
| 1674 | { |
| 1675 | struct fc_lport *lport; |
| 1676 | int wait_cnt = 0; |
| 1677 | |
| 1678 | BNX2FC_MISC_DBG("Entered %s\n", __func__); |
| 1679 | /* Kick off FIP/FLOGI */ |
| 1680 | if (!test_bit(BNX2FC_FW_INIT_DONE, &hba->init_done)) { |
| 1681 | printk(KERN_ERR PFX "Init not done yet\n"); |
| 1682 | return; |
| 1683 | } |
| 1684 | |
| 1685 | lport = hba->ctlr.lp; |
| 1686 | BNX2FC_HBA_DBG(lport, "calling fc_fabric_login\n"); |
| 1687 | |
| 1688 | if (!bnx2fc_link_ok(lport)) { |
| 1689 | BNX2FC_HBA_DBG(lport, "ctlr_link_up\n"); |
| 1690 | fcoe_ctlr_link_up(&hba->ctlr); |
| 1691 | fc_host_port_type(lport->host) = FC_PORTTYPE_NPORT; |
| 1692 | set_bit(ADAPTER_STATE_READY, &hba->adapter_state); |
| 1693 | } |
| 1694 | |
| 1695 | /* wait for the FCF to be selected before issuing FLOGI */ |
| 1696 | while (!hba->ctlr.sel_fcf) { |
| 1697 | msleep(250); |
| 1698 | /* give up after 3 secs */ |
| 1699 | if (++wait_cnt > 12) |
| 1700 | break; |
| 1701 | } |
| 1702 | fc_lport_init(lport); |
| 1703 | fc_fabric_login(lport); |
| 1704 | } |
| 1705 | |
| 1706 | |
| 1707 | /** |
| 1708 | * bnx2fc_ulp_init - Initialize an adapter instance |
| 1709 | * |
| 1710 | * @dev : cnic device handle |
| 1711 | * Called from cnic_register_driver() context to initialize all |
| 1712 | * enumerated cnic devices. This routine allocates adapter structure |
| 1713 | * and other device specific resources. |
| 1714 | */ |
| 1715 | static void bnx2fc_ulp_init(struct cnic_dev *dev) |
| 1716 | { |
| 1717 | struct bnx2fc_hba *hba; |
| 1718 | int rc = 0; |
| 1719 | |
| 1720 | BNX2FC_MISC_DBG("Entered %s\n", __func__); |
| 1721 | /* bnx2fc works only when bnx2x is loaded */ |
| 1722 | if (!test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) { |
| 1723 | printk(KERN_ERR PFX "bnx2fc FCoE not supported on %s," |
| 1724 | " flags: %lx\n", |
| 1725 | dev->netdev->name, dev->flags); |
| 1726 | return; |
| 1727 | } |
| 1728 | |
| 1729 | /* Configure FCoE interface */ |
| 1730 | hba = bnx2fc_interface_create(dev); |
| 1731 | if (!hba) { |
| 1732 | printk(KERN_ERR PFX "hba initialization failed\n"); |
| 1733 | return; |
| 1734 | } |
| 1735 | |
| 1736 | /* Add HBA to the adapter list */ |
| 1737 | mutex_lock(&bnx2fc_dev_lock); |
| 1738 | list_add_tail(&hba->link, &adapter_list); |
| 1739 | adapter_count++; |
| 1740 | mutex_unlock(&bnx2fc_dev_lock); |
| 1741 | |
| 1742 | clear_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic); |
| 1743 | rc = dev->register_device(dev, CNIC_ULP_FCOE, |
| 1744 | (void *) hba); |
| 1745 | if (rc) |
| 1746 | printk(KERN_ALERT PFX "register_device failed, rc = %d\n", rc); |
| 1747 | else |
| 1748 | set_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic); |
| 1749 | } |
| 1750 | |
| 1751 | |
| 1752 | static int bnx2fc_disable(struct net_device *netdev) |
| 1753 | { |
| 1754 | struct bnx2fc_hba *hba; |
| 1755 | struct net_device *phys_dev; |
| 1756 | struct ethtool_drvinfo drvinfo; |
| 1757 | int rc = 0; |
| 1758 | |
Nithin Sujir | 6702ca1 | 2011-03-17 17:13:27 -0700 | [diff] [blame] | 1759 | rtnl_lock(); |
Bhanu Gollapudi | 853e2bd | 2011-02-04 12:10:34 -0800 | [diff] [blame] | 1760 | |
| 1761 | mutex_lock(&bnx2fc_dev_lock); |
| 1762 | |
Bhanu Gollapudi | 853e2bd | 2011-02-04 12:10:34 -0800 | [diff] [blame] | 1763 | /* obtain physical netdev */ |
| 1764 | if (netdev->priv_flags & IFF_802_1Q_VLAN) |
| 1765 | phys_dev = vlan_dev_real_dev(netdev); |
| 1766 | else { |
| 1767 | printk(KERN_ERR PFX "Not a vlan device\n"); |
| 1768 | rc = -ENODEV; |
| 1769 | goto nodev; |
| 1770 | } |
| 1771 | |
| 1772 | /* verify if the physical device is a netxtreme2 device */ |
| 1773 | if (phys_dev->ethtool_ops && phys_dev->ethtool_ops->get_drvinfo) { |
| 1774 | memset(&drvinfo, 0, sizeof(drvinfo)); |
| 1775 | phys_dev->ethtool_ops->get_drvinfo(phys_dev, &drvinfo); |
| 1776 | if (strcmp(drvinfo.driver, "bnx2x")) { |
| 1777 | printk(KERN_ERR PFX "Not a netxtreme2 device\n"); |
| 1778 | rc = -ENODEV; |
| 1779 | goto nodev; |
| 1780 | } |
| 1781 | } else { |
| 1782 | printk(KERN_ERR PFX "unable to obtain drv_info\n"); |
| 1783 | rc = -ENODEV; |
| 1784 | goto nodev; |
| 1785 | } |
| 1786 | |
| 1787 | printk(KERN_ERR PFX "phys_dev is netxtreme2 device\n"); |
| 1788 | |
| 1789 | /* obtain hba and initialize rest of the structure */ |
| 1790 | hba = bnx2fc_hba_lookup(phys_dev); |
| 1791 | if (!hba || !hba->ctlr.lp) { |
| 1792 | rc = -ENODEV; |
| 1793 | printk(KERN_ERR PFX "bnx2fc_disable: hba or lport not found\n"); |
| 1794 | } else { |
| 1795 | fcoe_ctlr_link_down(&hba->ctlr); |
| 1796 | fcoe_clean_pending_queue(hba->ctlr.lp); |
| 1797 | } |
| 1798 | |
| 1799 | nodev: |
| 1800 | mutex_unlock(&bnx2fc_dev_lock); |
| 1801 | rtnl_unlock(); |
| 1802 | return rc; |
| 1803 | } |
| 1804 | |
| 1805 | |
| 1806 | static int bnx2fc_enable(struct net_device *netdev) |
| 1807 | { |
| 1808 | struct bnx2fc_hba *hba; |
| 1809 | struct net_device *phys_dev; |
| 1810 | struct ethtool_drvinfo drvinfo; |
| 1811 | int rc = 0; |
| 1812 | |
Nithin Sujir | 6702ca1 | 2011-03-17 17:13:27 -0700 | [diff] [blame] | 1813 | rtnl_lock(); |
Bhanu Gollapudi | 853e2bd | 2011-02-04 12:10:34 -0800 | [diff] [blame] | 1814 | |
| 1815 | BNX2FC_MISC_DBG("Entered %s\n", __func__); |
| 1816 | mutex_lock(&bnx2fc_dev_lock); |
| 1817 | |
Bhanu Gollapudi | 853e2bd | 2011-02-04 12:10:34 -0800 | [diff] [blame] | 1818 | /* obtain physical netdev */ |
| 1819 | if (netdev->priv_flags & IFF_802_1Q_VLAN) |
| 1820 | phys_dev = vlan_dev_real_dev(netdev); |
| 1821 | else { |
| 1822 | printk(KERN_ERR PFX "Not a vlan device\n"); |
| 1823 | rc = -ENODEV; |
| 1824 | goto nodev; |
| 1825 | } |
| 1826 | /* verify if the physical device is a netxtreme2 device */ |
| 1827 | if (phys_dev->ethtool_ops && phys_dev->ethtool_ops->get_drvinfo) { |
| 1828 | memset(&drvinfo, 0, sizeof(drvinfo)); |
| 1829 | phys_dev->ethtool_ops->get_drvinfo(phys_dev, &drvinfo); |
| 1830 | if (strcmp(drvinfo.driver, "bnx2x")) { |
| 1831 | printk(KERN_ERR PFX "Not a netxtreme2 device\n"); |
| 1832 | rc = -ENODEV; |
| 1833 | goto nodev; |
| 1834 | } |
| 1835 | } else { |
| 1836 | printk(KERN_ERR PFX "unable to obtain drv_info\n"); |
| 1837 | rc = -ENODEV; |
| 1838 | goto nodev; |
| 1839 | } |
| 1840 | |
| 1841 | /* obtain hba and initialize rest of the structure */ |
| 1842 | hba = bnx2fc_hba_lookup(phys_dev); |
| 1843 | if (!hba || !hba->ctlr.lp) { |
| 1844 | rc = -ENODEV; |
| 1845 | printk(KERN_ERR PFX "bnx2fc_enable: hba or lport not found\n"); |
| 1846 | } else if (!bnx2fc_link_ok(hba->ctlr.lp)) |
| 1847 | fcoe_ctlr_link_up(&hba->ctlr); |
| 1848 | |
| 1849 | nodev: |
| 1850 | mutex_unlock(&bnx2fc_dev_lock); |
| 1851 | rtnl_unlock(); |
| 1852 | return rc; |
| 1853 | } |
| 1854 | |
| 1855 | /** |
| 1856 | * bnx2fc_create - Create bnx2fc FCoE interface |
| 1857 | * |
| 1858 | * @buffer: The name of Ethernet interface to create on |
| 1859 | * @kp: The associated kernel param |
| 1860 | * |
| 1861 | * Called from sysfs. |
| 1862 | * |
| 1863 | * Returns: 0 for success |
| 1864 | */ |
| 1865 | static int bnx2fc_create(struct net_device *netdev, enum fip_state fip_mode) |
| 1866 | { |
| 1867 | struct bnx2fc_hba *hba; |
| 1868 | struct net_device *phys_dev; |
| 1869 | struct fc_lport *lport; |
| 1870 | struct ethtool_drvinfo drvinfo; |
| 1871 | int rc = 0; |
| 1872 | int vlan_id; |
| 1873 | |
| 1874 | BNX2FC_MISC_DBG("Entered bnx2fc_create\n"); |
| 1875 | if (fip_mode != FIP_MODE_FABRIC) { |
| 1876 | printk(KERN_ERR "fip mode not FABRIC\n"); |
| 1877 | return -EIO; |
| 1878 | } |
| 1879 | |
Nithin Sujir | 6702ca1 | 2011-03-17 17:13:27 -0700 | [diff] [blame] | 1880 | rtnl_lock(); |
| 1881 | |
Bhanu Gollapudi | 853e2bd | 2011-02-04 12:10:34 -0800 | [diff] [blame] | 1882 | mutex_lock(&bnx2fc_dev_lock); |
| 1883 | |
Bhanu Gollapudi | 853e2bd | 2011-02-04 12:10:34 -0800 | [diff] [blame] | 1884 | if (!try_module_get(THIS_MODULE)) { |
| 1885 | rc = -EINVAL; |
| 1886 | goto mod_err; |
| 1887 | } |
| 1888 | |
| 1889 | /* obtain physical netdev */ |
| 1890 | if (netdev->priv_flags & IFF_802_1Q_VLAN) { |
| 1891 | phys_dev = vlan_dev_real_dev(netdev); |
| 1892 | vlan_id = vlan_dev_vlan_id(netdev); |
| 1893 | } else { |
| 1894 | printk(KERN_ERR PFX "Not a vlan device\n"); |
| 1895 | rc = -EINVAL; |
| 1896 | goto netdev_err; |
| 1897 | } |
| 1898 | /* verify if the physical device is a netxtreme2 device */ |
| 1899 | if (phys_dev->ethtool_ops && phys_dev->ethtool_ops->get_drvinfo) { |
| 1900 | memset(&drvinfo, 0, sizeof(drvinfo)); |
| 1901 | phys_dev->ethtool_ops->get_drvinfo(phys_dev, &drvinfo); |
| 1902 | if (strcmp(drvinfo.driver, "bnx2x")) { |
| 1903 | printk(KERN_ERR PFX "Not a netxtreme2 device\n"); |
| 1904 | rc = -EINVAL; |
| 1905 | goto netdev_err; |
| 1906 | } |
| 1907 | } else { |
| 1908 | printk(KERN_ERR PFX "unable to obtain drv_info\n"); |
| 1909 | rc = -EINVAL; |
| 1910 | goto netdev_err; |
| 1911 | } |
| 1912 | |
| 1913 | /* obtain hba and initialize rest of the structure */ |
| 1914 | hba = bnx2fc_hba_lookup(phys_dev); |
| 1915 | if (!hba) { |
| 1916 | rc = -ENODEV; |
| 1917 | printk(KERN_ERR PFX "bnx2fc_create: hba not found\n"); |
| 1918 | goto netdev_err; |
| 1919 | } |
| 1920 | |
| 1921 | if (!test_bit(BNX2FC_FW_INIT_DONE, &hba->init_done)) { |
| 1922 | rc = bnx2fc_fw_init(hba); |
| 1923 | if (rc) |
| 1924 | goto netdev_err; |
| 1925 | } |
| 1926 | |
| 1927 | if (test_bit(BNX2FC_CREATE_DONE, &hba->init_done)) { |
| 1928 | rc = -EEXIST; |
| 1929 | goto netdev_err; |
| 1930 | } |
| 1931 | |
| 1932 | /* update netdev with vlan netdev */ |
| 1933 | hba->netdev = netdev; |
| 1934 | hba->vlan_id = vlan_id; |
| 1935 | hba->vlan_enabled = 1; |
| 1936 | |
| 1937 | rc = bnx2fc_interface_setup(hba, fip_mode); |
| 1938 | if (rc) { |
| 1939 | printk(KERN_ERR PFX "bnx2fc_interface_setup failed\n"); |
| 1940 | goto ifput_err; |
| 1941 | } |
| 1942 | |
| 1943 | hba->timer_work_queue = |
| 1944 | create_singlethread_workqueue("bnx2fc_timer_wq"); |
| 1945 | if (!hba->timer_work_queue) { |
| 1946 | printk(KERN_ERR PFX "ulp_init could not create timer_wq\n"); |
| 1947 | rc = -EINVAL; |
| 1948 | goto ifput_err; |
| 1949 | } |
| 1950 | |
| 1951 | lport = bnx2fc_if_create(hba, &hba->pcidev->dev, 0); |
| 1952 | if (!lport) { |
| 1953 | printk(KERN_ERR PFX "Failed to create interface (%s)\n", |
| 1954 | netdev->name); |
| 1955 | bnx2fc_netdev_cleanup(hba); |
| 1956 | rc = -EINVAL; |
| 1957 | goto if_create_err; |
| 1958 | } |
| 1959 | |
| 1960 | lport->boot_time = jiffies; |
| 1961 | |
| 1962 | /* Make this master N_port */ |
| 1963 | hba->ctlr.lp = lport; |
| 1964 | |
| 1965 | set_bit(BNX2FC_CREATE_DONE, &hba->init_done); |
| 1966 | printk(KERN_ERR PFX "create: START DISC\n"); |
| 1967 | bnx2fc_start_disc(hba); |
| 1968 | /* |
| 1969 | * Release from kref_init in bnx2fc_interface_setup, on success |
| 1970 | * lport should be holding a reference taken in bnx2fc_if_create |
| 1971 | */ |
| 1972 | bnx2fc_interface_put(hba); |
| 1973 | /* put netdev that was held while calling dev_get_by_name */ |
| 1974 | mutex_unlock(&bnx2fc_dev_lock); |
| 1975 | rtnl_unlock(); |
| 1976 | return 0; |
| 1977 | |
| 1978 | if_create_err: |
| 1979 | destroy_workqueue(hba->timer_work_queue); |
| 1980 | ifput_err: |
| 1981 | bnx2fc_interface_put(hba); |
| 1982 | netdev_err: |
| 1983 | module_put(THIS_MODULE); |
| 1984 | mod_err: |
| 1985 | mutex_unlock(&bnx2fc_dev_lock); |
| 1986 | rtnl_unlock(); |
| 1987 | return rc; |
| 1988 | } |
| 1989 | |
| 1990 | /** |
| 1991 | * bnx2fc_find_hba_for_cnic - maps cnic instance to bnx2fc adapter instance |
| 1992 | * |
| 1993 | * @cnic: Pointer to cnic device instance |
| 1994 | * |
| 1995 | **/ |
| 1996 | static struct bnx2fc_hba *bnx2fc_find_hba_for_cnic(struct cnic_dev *cnic) |
| 1997 | { |
| 1998 | struct list_head *list; |
| 1999 | struct list_head *temp; |
| 2000 | struct bnx2fc_hba *hba; |
| 2001 | |
| 2002 | /* Called with bnx2fc_dev_lock held */ |
| 2003 | list_for_each_safe(list, temp, &adapter_list) { |
| 2004 | hba = (struct bnx2fc_hba *)list; |
| 2005 | if (hba->cnic == cnic) |
| 2006 | return hba; |
| 2007 | } |
| 2008 | return NULL; |
| 2009 | } |
| 2010 | |
| 2011 | static struct bnx2fc_hba *bnx2fc_hba_lookup(struct net_device *phys_dev) |
| 2012 | { |
| 2013 | struct list_head *list; |
| 2014 | struct list_head *temp; |
| 2015 | struct bnx2fc_hba *hba; |
| 2016 | |
| 2017 | /* Called with bnx2fc_dev_lock held */ |
| 2018 | list_for_each_safe(list, temp, &adapter_list) { |
| 2019 | hba = (struct bnx2fc_hba *)list; |
| 2020 | if (hba->phys_dev == phys_dev) |
| 2021 | return hba; |
| 2022 | } |
| 2023 | printk(KERN_ERR PFX "hba_lookup: hba NULL\n"); |
| 2024 | return NULL; |
| 2025 | } |
| 2026 | |
| 2027 | /** |
| 2028 | * bnx2fc_ulp_exit - shuts down adapter instance and frees all resources |
| 2029 | * |
| 2030 | * @dev cnic device handle |
| 2031 | */ |
| 2032 | static void bnx2fc_ulp_exit(struct cnic_dev *dev) |
| 2033 | { |
| 2034 | struct bnx2fc_hba *hba; |
| 2035 | |
| 2036 | BNX2FC_MISC_DBG("Entered bnx2fc_ulp_exit\n"); |
| 2037 | |
| 2038 | if (!test_bit(CNIC_F_BNX2X_CLASS, &dev->flags)) { |
| 2039 | printk(KERN_ERR PFX "bnx2fc port check: %s, flags: %lx\n", |
| 2040 | dev->netdev->name, dev->flags); |
| 2041 | return; |
| 2042 | } |
| 2043 | |
| 2044 | mutex_lock(&bnx2fc_dev_lock); |
| 2045 | hba = bnx2fc_find_hba_for_cnic(dev); |
| 2046 | if (!hba) { |
| 2047 | printk(KERN_ERR PFX "bnx2fc_ulp_exit: hba not found, dev 0%p\n", |
| 2048 | dev); |
| 2049 | mutex_unlock(&bnx2fc_dev_lock); |
| 2050 | return; |
| 2051 | } |
| 2052 | |
| 2053 | list_del_init(&hba->link); |
| 2054 | adapter_count--; |
| 2055 | |
| 2056 | if (test_bit(BNX2FC_CREATE_DONE, &hba->init_done)) { |
| 2057 | /* destroy not called yet, move to quiesced list */ |
| 2058 | bnx2fc_netdev_cleanup(hba); |
| 2059 | bnx2fc_if_destroy(hba->ctlr.lp); |
| 2060 | } |
| 2061 | mutex_unlock(&bnx2fc_dev_lock); |
| 2062 | |
| 2063 | bnx2fc_ulp_stop(hba); |
| 2064 | /* unregister cnic device */ |
| 2065 | if (test_and_clear_bit(BNX2FC_CNIC_REGISTERED, &hba->reg_with_cnic)) |
| 2066 | hba->cnic->unregister_device(hba->cnic, CNIC_ULP_FCOE); |
| 2067 | bnx2fc_interface_destroy(hba); |
| 2068 | } |
| 2069 | |
| 2070 | /** |
| 2071 | * bnx2fc_fcoe_reset - Resets the fcoe |
| 2072 | * |
| 2073 | * @shost: shost the reset is from |
| 2074 | * |
| 2075 | * Returns: always 0 |
| 2076 | */ |
| 2077 | static int bnx2fc_fcoe_reset(struct Scsi_Host *shost) |
| 2078 | { |
| 2079 | struct fc_lport *lport = shost_priv(shost); |
| 2080 | fc_lport_reset(lport); |
| 2081 | return 0; |
| 2082 | } |
| 2083 | |
| 2084 | |
| 2085 | static bool bnx2fc_match(struct net_device *netdev) |
| 2086 | { |
| 2087 | mutex_lock(&bnx2fc_dev_lock); |
| 2088 | if (netdev->priv_flags & IFF_802_1Q_VLAN) { |
| 2089 | struct net_device *phys_dev = vlan_dev_real_dev(netdev); |
| 2090 | |
| 2091 | if (bnx2fc_hba_lookup(phys_dev)) { |
| 2092 | mutex_unlock(&bnx2fc_dev_lock); |
| 2093 | return true; |
| 2094 | } |
| 2095 | } |
| 2096 | mutex_unlock(&bnx2fc_dev_lock); |
| 2097 | return false; |
| 2098 | } |
| 2099 | |
| 2100 | |
| 2101 | static struct fcoe_transport bnx2fc_transport = { |
| 2102 | .name = {"bnx2fc"}, |
| 2103 | .attached = false, |
| 2104 | .list = LIST_HEAD_INIT(bnx2fc_transport.list), |
| 2105 | .match = bnx2fc_match, |
| 2106 | .create = bnx2fc_create, |
| 2107 | .destroy = bnx2fc_destroy, |
| 2108 | .enable = bnx2fc_enable, |
| 2109 | .disable = bnx2fc_disable, |
| 2110 | }; |
| 2111 | |
| 2112 | /** |
| 2113 | * bnx2fc_percpu_thread_create - Create a receive thread for an |
| 2114 | * online CPU |
| 2115 | * |
| 2116 | * @cpu: cpu index for the online cpu |
| 2117 | */ |
| 2118 | static void bnx2fc_percpu_thread_create(unsigned int cpu) |
| 2119 | { |
| 2120 | struct bnx2fc_percpu_s *p; |
| 2121 | struct task_struct *thread; |
| 2122 | |
| 2123 | p = &per_cpu(bnx2fc_percpu, cpu); |
| 2124 | |
| 2125 | thread = kthread_create(bnx2fc_percpu_io_thread, |
| 2126 | (void *)p, |
| 2127 | "bnx2fc_thread/%d", cpu); |
| 2128 | /* bind thread to the cpu */ |
| 2129 | if (likely(!IS_ERR(p->iothread))) { |
| 2130 | kthread_bind(thread, cpu); |
| 2131 | p->iothread = thread; |
| 2132 | wake_up_process(thread); |
| 2133 | } |
| 2134 | } |
| 2135 | |
| 2136 | static void bnx2fc_percpu_thread_destroy(unsigned int cpu) |
| 2137 | { |
| 2138 | struct bnx2fc_percpu_s *p; |
| 2139 | struct task_struct *thread; |
| 2140 | struct bnx2fc_work *work, *tmp; |
| 2141 | LIST_HEAD(work_list); |
| 2142 | |
| 2143 | BNX2FC_MISC_DBG("destroying io thread for CPU %d\n", cpu); |
| 2144 | |
| 2145 | /* Prevent any new work from being queued for this CPU */ |
| 2146 | p = &per_cpu(bnx2fc_percpu, cpu); |
| 2147 | spin_lock_bh(&p->fp_work_lock); |
| 2148 | thread = p->iothread; |
| 2149 | p->iothread = NULL; |
| 2150 | |
| 2151 | |
| 2152 | /* Free all work in the list */ |
| 2153 | list_for_each_entry_safe(work, tmp, &work_list, list) { |
| 2154 | list_del_init(&work->list); |
| 2155 | bnx2fc_process_cq_compl(work->tgt, work->wqe); |
| 2156 | kfree(work); |
| 2157 | } |
| 2158 | |
| 2159 | spin_unlock_bh(&p->fp_work_lock); |
| 2160 | |
| 2161 | if (thread) |
| 2162 | kthread_stop(thread); |
| 2163 | } |
| 2164 | |
| 2165 | /** |
| 2166 | * bnx2fc_cpu_callback - Handler for CPU hotplug events |
| 2167 | * |
| 2168 | * @nfb: The callback data block |
| 2169 | * @action: The event triggering the callback |
| 2170 | * @hcpu: The index of the CPU that the event is for |
| 2171 | * |
| 2172 | * This creates or destroys per-CPU data for fcoe |
| 2173 | * |
| 2174 | * Returns NOTIFY_OK always. |
| 2175 | */ |
| 2176 | static int bnx2fc_cpu_callback(struct notifier_block *nfb, |
| 2177 | unsigned long action, void *hcpu) |
| 2178 | { |
| 2179 | unsigned cpu = (unsigned long)hcpu; |
| 2180 | |
| 2181 | switch (action) { |
| 2182 | case CPU_ONLINE: |
| 2183 | case CPU_ONLINE_FROZEN: |
| 2184 | printk(PFX "CPU %x online: Create Rx thread\n", cpu); |
| 2185 | bnx2fc_percpu_thread_create(cpu); |
| 2186 | break; |
| 2187 | case CPU_DEAD: |
| 2188 | case CPU_DEAD_FROZEN: |
| 2189 | printk(PFX "CPU %x offline: Remove Rx thread\n", cpu); |
| 2190 | bnx2fc_percpu_thread_destroy(cpu); |
| 2191 | break; |
| 2192 | default: |
| 2193 | break; |
| 2194 | } |
| 2195 | return NOTIFY_OK; |
| 2196 | } |
| 2197 | |
| 2198 | /** |
| 2199 | * bnx2fc_mod_init - module init entry point |
| 2200 | * |
| 2201 | * Initialize driver wide global data structures, and register |
| 2202 | * with cnic module |
| 2203 | **/ |
| 2204 | static int __init bnx2fc_mod_init(void) |
| 2205 | { |
| 2206 | struct fcoe_percpu_s *bg; |
| 2207 | struct task_struct *l2_thread; |
| 2208 | int rc = 0; |
| 2209 | unsigned int cpu = 0; |
| 2210 | struct bnx2fc_percpu_s *p; |
| 2211 | |
| 2212 | printk(KERN_INFO PFX "%s", version); |
| 2213 | |
| 2214 | /* register as a fcoe transport */ |
| 2215 | rc = fcoe_transport_attach(&bnx2fc_transport); |
| 2216 | if (rc) { |
| 2217 | printk(KERN_ERR "failed to register an fcoe transport, check " |
| 2218 | "if libfcoe is loaded\n"); |
| 2219 | goto out; |
| 2220 | } |
| 2221 | |
| 2222 | INIT_LIST_HEAD(&adapter_list); |
| 2223 | mutex_init(&bnx2fc_dev_lock); |
| 2224 | adapter_count = 0; |
| 2225 | |
| 2226 | /* Attach FC transport template */ |
| 2227 | rc = bnx2fc_attach_transport(); |
| 2228 | if (rc) |
| 2229 | goto detach_ft; |
| 2230 | |
| 2231 | bnx2fc_wq = alloc_workqueue("bnx2fc", 0, 0); |
| 2232 | if (!bnx2fc_wq) { |
| 2233 | rc = -ENOMEM; |
| 2234 | goto release_bt; |
| 2235 | } |
| 2236 | |
| 2237 | bg = &bnx2fc_global; |
| 2238 | skb_queue_head_init(&bg->fcoe_rx_list); |
| 2239 | l2_thread = kthread_create(bnx2fc_l2_rcv_thread, |
| 2240 | (void *)bg, |
| 2241 | "bnx2fc_l2_thread"); |
| 2242 | if (IS_ERR(l2_thread)) { |
| 2243 | rc = PTR_ERR(l2_thread); |
| 2244 | goto free_wq; |
| 2245 | } |
| 2246 | wake_up_process(l2_thread); |
| 2247 | spin_lock_bh(&bg->fcoe_rx_list.lock); |
| 2248 | bg->thread = l2_thread; |
| 2249 | spin_unlock_bh(&bg->fcoe_rx_list.lock); |
| 2250 | |
| 2251 | for_each_possible_cpu(cpu) { |
| 2252 | p = &per_cpu(bnx2fc_percpu, cpu); |
| 2253 | INIT_LIST_HEAD(&p->work_list); |
| 2254 | spin_lock_init(&p->fp_work_lock); |
| 2255 | } |
| 2256 | |
| 2257 | for_each_online_cpu(cpu) { |
| 2258 | bnx2fc_percpu_thread_create(cpu); |
| 2259 | } |
| 2260 | |
| 2261 | /* Initialize per CPU interrupt thread */ |
| 2262 | register_hotcpu_notifier(&bnx2fc_cpu_notifier); |
| 2263 | |
| 2264 | cnic_register_driver(CNIC_ULP_FCOE, &bnx2fc_cnic_cb); |
| 2265 | |
| 2266 | return 0; |
| 2267 | |
| 2268 | free_wq: |
| 2269 | destroy_workqueue(bnx2fc_wq); |
| 2270 | release_bt: |
| 2271 | bnx2fc_release_transport(); |
| 2272 | detach_ft: |
| 2273 | fcoe_transport_detach(&bnx2fc_transport); |
| 2274 | out: |
| 2275 | return rc; |
| 2276 | } |
| 2277 | |
| 2278 | static void __exit bnx2fc_mod_exit(void) |
| 2279 | { |
| 2280 | LIST_HEAD(to_be_deleted); |
| 2281 | struct bnx2fc_hba *hba, *next; |
| 2282 | struct fcoe_percpu_s *bg; |
| 2283 | struct task_struct *l2_thread; |
| 2284 | struct sk_buff *skb; |
| 2285 | unsigned int cpu = 0; |
| 2286 | |
| 2287 | /* |
| 2288 | * NOTE: Since cnic calls register_driver routine rtnl_lock, |
| 2289 | * it will have higher precedence than bnx2fc_dev_lock. |
| 2290 | * unregister_device() cannot be called with bnx2fc_dev_lock |
| 2291 | * held. |
| 2292 | */ |
| 2293 | mutex_lock(&bnx2fc_dev_lock); |
| 2294 | list_splice(&adapter_list, &to_be_deleted); |
| 2295 | INIT_LIST_HEAD(&adapter_list); |
| 2296 | adapter_count = 0; |
| 2297 | mutex_unlock(&bnx2fc_dev_lock); |
| 2298 | |
| 2299 | /* Unregister with cnic */ |
| 2300 | list_for_each_entry_safe(hba, next, &to_be_deleted, link) { |
| 2301 | list_del_init(&hba->link); |
| 2302 | printk(KERN_ERR PFX "MOD_EXIT:destroy hba = 0x%p, kref = %d\n", |
| 2303 | hba, atomic_read(&hba->kref.refcount)); |
| 2304 | bnx2fc_ulp_stop(hba); |
| 2305 | /* unregister cnic device */ |
| 2306 | if (test_and_clear_bit(BNX2FC_CNIC_REGISTERED, |
| 2307 | &hba->reg_with_cnic)) |
| 2308 | hba->cnic->unregister_device(hba->cnic, CNIC_ULP_FCOE); |
| 2309 | bnx2fc_interface_destroy(hba); |
| 2310 | } |
| 2311 | cnic_unregister_driver(CNIC_ULP_FCOE); |
| 2312 | |
| 2313 | /* Destroy global thread */ |
| 2314 | bg = &bnx2fc_global; |
| 2315 | spin_lock_bh(&bg->fcoe_rx_list.lock); |
| 2316 | l2_thread = bg->thread; |
| 2317 | bg->thread = NULL; |
| 2318 | while ((skb = __skb_dequeue(&bg->fcoe_rx_list)) != NULL) |
| 2319 | kfree_skb(skb); |
| 2320 | |
| 2321 | spin_unlock_bh(&bg->fcoe_rx_list.lock); |
| 2322 | |
| 2323 | if (l2_thread) |
| 2324 | kthread_stop(l2_thread); |
| 2325 | |
| 2326 | unregister_hotcpu_notifier(&bnx2fc_cpu_notifier); |
| 2327 | |
| 2328 | /* Destroy per cpu threads */ |
| 2329 | for_each_online_cpu(cpu) { |
| 2330 | bnx2fc_percpu_thread_destroy(cpu); |
| 2331 | } |
| 2332 | |
| 2333 | destroy_workqueue(bnx2fc_wq); |
| 2334 | /* |
| 2335 | * detach from scsi transport |
| 2336 | * must happen after all destroys are done |
| 2337 | */ |
| 2338 | bnx2fc_release_transport(); |
| 2339 | |
| 2340 | /* detach from fcoe transport */ |
| 2341 | fcoe_transport_detach(&bnx2fc_transport); |
| 2342 | } |
| 2343 | |
| 2344 | module_init(bnx2fc_mod_init); |
| 2345 | module_exit(bnx2fc_mod_exit); |
| 2346 | |
| 2347 | static struct fc_function_template bnx2fc_transport_function = { |
| 2348 | .show_host_node_name = 1, |
| 2349 | .show_host_port_name = 1, |
| 2350 | .show_host_supported_classes = 1, |
| 2351 | .show_host_supported_fc4s = 1, |
| 2352 | .show_host_active_fc4s = 1, |
| 2353 | .show_host_maxframe_size = 1, |
| 2354 | |
| 2355 | .show_host_port_id = 1, |
| 2356 | .show_host_supported_speeds = 1, |
| 2357 | .get_host_speed = fc_get_host_speed, |
| 2358 | .show_host_speed = 1, |
| 2359 | .show_host_port_type = 1, |
| 2360 | .get_host_port_state = fc_get_host_port_state, |
| 2361 | .show_host_port_state = 1, |
| 2362 | .show_host_symbolic_name = 1, |
| 2363 | |
| 2364 | .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) + |
| 2365 | sizeof(struct bnx2fc_rport)), |
| 2366 | .show_rport_maxframe_size = 1, |
| 2367 | .show_rport_supported_classes = 1, |
| 2368 | |
| 2369 | .show_host_fabric_name = 1, |
| 2370 | .show_starget_node_name = 1, |
| 2371 | .show_starget_port_name = 1, |
| 2372 | .show_starget_port_id = 1, |
| 2373 | .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo, |
| 2374 | .show_rport_dev_loss_tmo = 1, |
| 2375 | .get_fc_host_stats = bnx2fc_get_host_stats, |
| 2376 | |
| 2377 | .issue_fc_host_lip = bnx2fc_fcoe_reset, |
| 2378 | |
| 2379 | .terminate_rport_io = fc_rport_terminate_io, |
| 2380 | |
| 2381 | .vport_create = bnx2fc_vport_create, |
| 2382 | .vport_delete = bnx2fc_vport_destroy, |
| 2383 | .vport_disable = bnx2fc_vport_disable, |
| 2384 | }; |
| 2385 | |
| 2386 | static struct fc_function_template bnx2fc_vport_xport_function = { |
| 2387 | .show_host_node_name = 1, |
| 2388 | .show_host_port_name = 1, |
| 2389 | .show_host_supported_classes = 1, |
| 2390 | .show_host_supported_fc4s = 1, |
| 2391 | .show_host_active_fc4s = 1, |
| 2392 | .show_host_maxframe_size = 1, |
| 2393 | |
| 2394 | .show_host_port_id = 1, |
| 2395 | .show_host_supported_speeds = 1, |
| 2396 | .get_host_speed = fc_get_host_speed, |
| 2397 | .show_host_speed = 1, |
| 2398 | .show_host_port_type = 1, |
| 2399 | .get_host_port_state = fc_get_host_port_state, |
| 2400 | .show_host_port_state = 1, |
| 2401 | .show_host_symbolic_name = 1, |
| 2402 | |
| 2403 | .dd_fcrport_size = (sizeof(struct fc_rport_libfc_priv) + |
| 2404 | sizeof(struct bnx2fc_rport)), |
| 2405 | .show_rport_maxframe_size = 1, |
| 2406 | .show_rport_supported_classes = 1, |
| 2407 | |
| 2408 | .show_host_fabric_name = 1, |
| 2409 | .show_starget_node_name = 1, |
| 2410 | .show_starget_port_name = 1, |
| 2411 | .show_starget_port_id = 1, |
| 2412 | .set_rport_dev_loss_tmo = fc_set_rport_loss_tmo, |
| 2413 | .show_rport_dev_loss_tmo = 1, |
| 2414 | .get_fc_host_stats = fc_get_host_stats, |
| 2415 | .issue_fc_host_lip = bnx2fc_fcoe_reset, |
| 2416 | .terminate_rport_io = fc_rport_terminate_io, |
| 2417 | }; |
| 2418 | |
| 2419 | /** |
| 2420 | * scsi_host_template structure used while registering with SCSI-ml |
| 2421 | */ |
| 2422 | static struct scsi_host_template bnx2fc_shost_template = { |
| 2423 | .module = THIS_MODULE, |
| 2424 | .name = "Broadcom Offload FCoE Initiator", |
| 2425 | .queuecommand = bnx2fc_queuecommand, |
| 2426 | .eh_abort_handler = bnx2fc_eh_abort, /* abts */ |
| 2427 | .eh_device_reset_handler = bnx2fc_eh_device_reset, /* lun reset */ |
| 2428 | .eh_target_reset_handler = bnx2fc_eh_target_reset, /* tgt reset */ |
| 2429 | .eh_host_reset_handler = fc_eh_host_reset, |
| 2430 | .slave_alloc = fc_slave_alloc, |
| 2431 | .change_queue_depth = fc_change_queue_depth, |
| 2432 | .change_queue_type = fc_change_queue_type, |
| 2433 | .this_id = -1, |
| 2434 | .cmd_per_lun = 3, |
Bhanu Gollapudi | 0ea5c27 | 2011-03-17 17:13:29 -0700 | [diff] [blame] | 2435 | .can_queue = BNX2FC_CAN_QUEUE, |
Bhanu Gollapudi | 853e2bd | 2011-02-04 12:10:34 -0800 | [diff] [blame] | 2436 | .use_clustering = ENABLE_CLUSTERING, |
| 2437 | .sg_tablesize = BNX2FC_MAX_BDS_PER_CMD, |
| 2438 | .max_sectors = 512, |
| 2439 | }; |
| 2440 | |
| 2441 | static struct libfc_function_template bnx2fc_libfc_fcn_templ = { |
| 2442 | .frame_send = bnx2fc_xmit, |
| 2443 | .elsct_send = bnx2fc_elsct_send, |
| 2444 | .fcp_abort_io = bnx2fc_abort_io, |
| 2445 | .fcp_cleanup = bnx2fc_cleanup, |
| 2446 | .rport_event_callback = bnx2fc_rport_event_handler, |
| 2447 | }; |
| 2448 | |
| 2449 | /** |
| 2450 | * bnx2fc_cnic_cb - global template of bnx2fc - cnic driver interface |
| 2451 | * structure carrying callback function pointers |
| 2452 | */ |
| 2453 | static struct cnic_ulp_ops bnx2fc_cnic_cb = { |
| 2454 | .owner = THIS_MODULE, |
| 2455 | .cnic_init = bnx2fc_ulp_init, |
| 2456 | .cnic_exit = bnx2fc_ulp_exit, |
| 2457 | .cnic_start = bnx2fc_ulp_start, |
| 2458 | .cnic_stop = bnx2fc_ulp_stop, |
| 2459 | .indicate_kcqes = bnx2fc_indicate_kcqe, |
| 2460 | .indicate_netevent = bnx2fc_indicate_netevent, |
| 2461 | }; |